Here some Frequently Asked Questions (FAQs) are collected.

Please read this page before sending an email with your question.

Make sure you have MS Internet Explorer installed and that you keep it up to date: Tyre is using a built-in version of it!
It is also important that you have Adobe Flash player installed properly as a plugin for MS Internet Explorer.

The Frequently Asked Questions are sorted in four sections:

A. Tyre itself
B. Tyre and TomTom or Garmin
C. Tyre and Google Maps
D. Tyre and Google Earth
E. If nothing helps...

A. Tyre itself

• Is Tyre available in my language?
• I downloaded the setup file, but when I try to run it, I receive the message that it is not a valid Win32 Application.
• I seem to have lost some data from my file (kmz, gpx, etc.). How is that possible?
• I try to install Tyre, but there are lots of error messages...
• Some options cannot be set. The installation of Google Earth cannot be repaired either.
• Will there be a version of Tyre for Mac computers?
• Tyre uses a subfolder named 'Tyre' in the User Application Data folder. Can I change that particular folder?
• I try to download itinerary files, but all I see is a list of waypoints and coordinates.
• If I use 'Reverse' to ride/drive my trip the other way round, the route seems to have errors.
• I try to run Tyre, but I get an error message, saying 'Range check error'.
• Can Tyre be used for cyclists or walkers, so that routes will go by pathways?
• I am using a proxy server and Tyre seems to be unable to access Internet.
• In the 'Preferences' window there is an option to save some files in UTF-8 format. Why is that?
• Tyre does not use Google Maps. Whatever I do, it only runs Google Earth.
• I get a message about a missing file, such as 'UTF8Code.txt'.
• Can Tyre be installed on a portable device (such as a USB stick)?

B. Tyre and TomTom or Garmin

• I receive the message that my TomTom or Garmin device cannot be found.
• I do not have a TomTom RIDER, but another TomTom device or a PDA. Can I use Tyre as well?
• I do not have TomTom software, but a completely different system. Can I use Tyre as well?
• Where can I find the folder where my itineraries (route files) are stored?
• Where can I find the folder where my POI files (points of interest) are stored?
• On my TomTom device, I cannot find the 'Planning preferences' option to set the 'Ask me every time I plan' option.
• My device is a TomTom ONE 3rd/4th edition and I cannot find any itinerary planning functions. What can I do?
• In my TomTom device my route is different from the route that I planned in the maps window. What am I doing wrong?
• My TomTom device does not accept itinerary files that were created by Tyre. There is an error message. What can I do?

C. Tyre and Google Maps

For GOOGLE MAPS INTERFACE (if not activated):
Don't open Google Earth - don't open Google Maps directly.
Open Tyre and choose Preferences from the Tools menu - make sure "Use Google Earth..." (first item) is NOT checked.
Close the window.

• When I try to open Google Maps for editing files, I receive an error message.
• When I use the built-in version of Google Maps, are route lines draggable?
• On calculating, I receive the error message that the directions cannot be computed. What is going on?
• I want my waypoints to be displayed using Google Map, but I receive an error message.
• On calculating a route, calculating stops, but there is no error message. What is wrong?
• Any time I create waypoints, they are moved to the nearest roads. I don't want that. What can I do?
• On opening the Google Maps window, I get an error message saying 'access denied'.
• Can miles be used instead of kilometers when using Tyre and Google Maps? If so, how would it be changed?
• I try to locate destinations and waypoints using postcodes for a place, but Tyre always seems to put the waypoint at the wrong place.
• I try to locate waypoints on the map, but they are moved to another location on the map instantly.
• I am planning a route that will go along a pass, but Tyre does not use the pass to calculate my route. What is going wrong?
• On opening the Google Maps window, I get an error message other than the above mentioned.
• I want to activate Street View, but I don't see anything.
• I want to print my route as text or as an image. How is that done?
• I try open the map window, but I don't see anything. The window does not appear or its content is just empty.
• Tyre is very slow or seems to freeze. What is going on?
• If I want to rename a waypoint or a POI, its name is highlighted, but I am not able to modify the name.
• I am trying to open the map window, but there are error messages that start with "Access violation at <address number>..."

D. Tyre and Google Earth

• I receive the message that Google Earth cannot be run.
• When I try to display a route or some points of interest, I receive an error message or some other application (e.g. PoiEdit) is activated in stead of Google Earth.
• Both Tyre and Google Earth are installed onto my computer. But Google Earth is not running from within Tyre.
• Is there any way to display the full route in stead of just straight lines between the waypoints?

E. If nothing helps...

I cannot find a solution for my problem. What can I do?

A. Tyre itself

1. Is Tyre available in my language?
Answer
All available languages are displayed in the 'general' page.
You can select your own language directly after downloading: start the setup and choose your own language.
These languages are only available for the program and for the help pages. The website you are reading now, is only available in English.

If you are interested in translating Tyre into your own language: Contact me!
Tranlating is really easy: you don't have to know anything about programming.
The only thing you need to know, is your own language...

2. I downloaded the setup file, but when I try to run it, I receive the message that it is not a valid Win32 Application.
Answer
If you are using internet protection software, e.g. a sophisticated firewall (like ZoneAlarm), that software may prohibit downloading EXE files or it may cause an incorrect download.
In that case, shut down your protection software an retry downloading. After downloading, reactivate your protection software.
OR: you can download a ZIP file containing the setup file from the download page. To go there, click here.

3. I seem to have lost some data from my file (kmz, gpx, etc.). How is that possible?
Answer
Tyre will only save the waypoints (or the points of interest) and their coordinates. It will not save any other data, such as altitude or additional images.

5. Some options cannot be set. The installation of Google Earth cannot be repaired either.
Answer
Some options can only be set and some functions can only be executed if you are logged in with administrator rights.
If you are unable to connect (associate) file types with Tyre (*.itn; *.ov2), or in case you cannot repair the Google Earth installation, you should log off and then log in again with administrator rights. Or you should contact your administrator.

6. Will there be a version of Tyre for Mac computers?
Answer
No, unfortunately not. At least not in the near future. If I learn how to write applications for Mac computers, I will reconsider this question.

7. Tyre uses a subfolder named 'Tyre' in the User Application Data folder. Can I change that particular folder?
Answer
Yes, you can. But you should do this only if you have to!
After installing Tyre, follow these steps:

• Create the new folder that you want to use in stead of '<User Application Data>\Tyre'. The '<User Application Data>' folder is:
  For Windows XP: 'C:\Documents and Settings\<User Name>\Application Data'.
  For Windows Vista and Windows 7: 'C:\Users\<User Name>\AppData\Roaming'.
• Replace all files from '<User Application Data>\Tyre' to the new folder and delete the old one.
• Open NotePad and enter the following text:
  
  [Tyre]
  NewPath=Path
  
  For Path you enter the new path.
  Be sure to enter an existing path that you have access to. Otherwise the old path will be created and used again.
  Be also sure NOT to end the path with a backslash, e.g. 'D:\Tyre' is correct, 'D:\Tyre\' is not correct.
• Save the file into your Windows folder as 'TyrePath.txt';

8. I try to download itinerary files, but all I see is a list of waypoints and coordinates.
Answer
Apparently, you are using FireFox or Google Chrome as your web browser. On some points, FireFox and Chrome are different from Internet Explorer. If you click the link of an itinerary file, the file will be opened instead of being downloaded.
But there is a way to download itinerary files using FireFox or Chrome:
- right click the link (file name);
- a menu will appear;
- choose 'save target as...' (or a similar description) from the menu.
- now your file will be downloaded.
There is another possibility as well: when the content of the itinerary file is displayed in a browser window, in FireFox or Chrome select 'Save as' from the 'File' menu.

10. I try to run Tyre, but I get an error message, saying 'Range check error'.
Answer
This message means that some variable does not exist or cannot be initialized. Try this for a solution:
- Remove Tyre from your computer.
- Remove the following key (and all of its sub keys) from the registry: HKEY_CURRENT_USER\Software\Tyre
If there are still Tyre files on your disk, remove them too:
- Remove the folder C:\Program Files\Tyre and all of its contents.
- Remove the Tyre Application Data folder and all of its contents.
You can find the Application Data folder here:
For Windows XP: 'C:\Documents and Settings\<User Name>\Application Data\Tyre'.
For Windows Vista and Windows 7: 'C:\Users\<User Name>\AppData\Roaming\Tyre'.
Done this? Then restart your computer, download and install Tyre again.

B. Tyre and TomTom or Garmin

1. I receive the message that my TomTom or Garmin device cannot be found.
Answer
Tyre has been created to be uses with a TomTom RIDER. However, it can be used in combination with other TomTom systems, but on some systems the above mentioned message will come up, because TomTom systems are different from each other.
Since version 5.43 Tyre can also be used for use with Garmin devices. But maybe this is not true for all of them. Read below for more information.

TomTom
If you receive this error message and your TomTom is connected to your computer properly, your problem can be solved this way:

• Just to be sure, check if your TomTom is properly connected to your computer!
• If you are using a TomTom RIDER, GO or ONE, the root folder of your TomTom should contain a folder, called 'ITN'. Check if this folder exists. If not, create it yourself.
• If you are using a PDA with TomTom Navigator software (version 5 or up), the storage card of your PDA should contain a folder, called 'ITN' ('\Storage Card\ITN'). Check if this folder exists. If not, create it yourself.
• If you are using TomTom Navigator software version 6 on your PDA, there should be a folder with the same name as a subfolder of the Navigator software as well ('\Program Files\Navigator\ITN'). Check if this folder exists. If not, create it yourself.

• Your device must be visible for Windows as a 'drive' (you can check this in 'My Computer').
  
• Your device must have a folder called '\Garmin\GPX'. This is the folder where your itinerary files will be stored.

2. I do not have a TomTom RIDER, but another TomTom device or a PDA. Can I use Tyre as well?
Answer
Although Tyre initially has been developed for TomTom RIDER (the device that I own), Tyre does not depend on your hardware, but on the software that has been installed on it. So, it can be used in combination with other TomTom devices or with a PDA as well.
There is only one condition: you should have the right software installed on your TomTom or PDA: TomTom Navigator version 5 or up.
Although I do not have any experience myself, from other people I hear that they use Tyre together with their TomTom GO or ONE or their PDA successfully.
As far as I know, this does not count for the TomTom ONE 3rd and 4th Edition. Those devices do not have itinerary planning functionality. It is not possible to load, save and use itinerary files therefore on those devices. Unless you manually edit the menu structure of the TomTom ONE 3rd/4th Edition: you may use the TomTom Menu Designer to do that: click here for more information.
However, if you use another system than a TomTom RIDER, it might be possible that you receive the message that your TomTom cannot be found. To solve that problem, see above.

3. I do not have TomTom software, but a completely different system. Can I use Tyre as well?
Answer
Maybe, maybe not.
Tyre can save your itineraries (route files) as different file types: *.itn (TomTom Itineraries), *.ov2 (TomTom Points of Interest), *.kml / *.kmz (Google Earth), *.rte / *.rt2 (OziExplorer), *.gpx (General GPS Exchange) and *.csv (Microsoft Excel).
Most other systems do not accept itn files or kml files. Maybe they accept gpx files, because that file type is common for GPS files.
So, if your system accepts gpx files, you can use Tyre.
Since version 5.43 Tyre is fully compatible with Garmin devices. That means: if you connect a Garmin device to your computer, Tyre will notice and switch to 'Garmin mode'.

If you are using iGo software, you can use Tyre this way: save your route in the Google KML format. If necessary, create a folder 'userdata' on your SD-card, with a subfolder 'route' in it. Copy your route (in KML format) into that folder.

4. Where can I find the folder where my itineraries (route files) are stored?
Answer
If you have a TomTom RIDER or another regular TomTom device, your itineraries will be saved in a folder called 'ITN'. You can find this folder on the memory card in your TomTom.

If you have a PDA, your itineraries will be saved into another folder.
With TomTom Navigor 5 software, your itineraries are stored in the folder '\Storage Card\ITN'.
With TomTom Navigor 6 software, your itineraries can be stored in two different folders: in '\Storage Card\ITN' and in '\Program Files\Navigator\ITN'.
If you still cannot find the folder that contains your itinerary files, you can do the following:

• Create a simple itinerary using your TomTom device (one or two waypoints will do).
• Give that itinerary a name that can be recognized easily.
• Save the itinerary.
• Search the itinerary name using your operating system (Windows).
• If you found the itinerary, you found the name of the folder as well.

5. Where can I find the folder where my POI files (points of interest) are stored?
Answer
All POI files are stored in the same folder as the map they belong to.
E.g.: a POI file containing all the cheap gas stations in Western Europe can be found in the folder that contains the map of Western Europe (usually called 'Western Europe').
If you are using a TomTom RIDER, GO or ONE, map folders can be found on the storage card in your TomTom (e.g. 'F:\<map name>').
If you are using a PDA with TomTom Navigator software, map folders can be found on the storage card in your PDA ('\Storage Card\<map name>').

6. On my TomTom device, I cannot find the 'Planning preferences' option to set the 'Ask me every time I plan' option.
Answer
If you open the preferences of your TomTom device (touch the screen somewhere and tap 'Edit preferences'), you can see how many preference screens you have in the upper left corner. If it says '1 of 3', you will be unable to find the planning preferences. They are hidden. But do not worry: you can make them appear. Follow these steps:

• Go to the third preference page ('3 of 3') and look for an option that says 'Display all menu items'.
• Tap that option. Your TomTom device will tell you that all menu items will be available from now on.
• Open the preferences again: touch the screen somewhere and tap 'Edit preferences'.
• Now you will have 7 preference screens ('1 of 7'). Go to page 4. There you will find an option called 'Planning preferences'. (It comes with an icon that contains a car, a bike and a walking person.)
• Now you can choose the 'Ask me every time I plan' option.

7. My device is a TomTom ONE 3rd/4th edition and I cannot find any itinerary planning functions. What can I do?
Answer
By default you cannot use the ONE 3rd or 4th ed. for route planning. It is not in the menu of those devices.
But there is more:
Although I have no experience myself, from several other people I understand that the software inside the 3rd/4th ed. does have the possibility for route planning. It is waiting there to be activated: by changing the menu.
There is a small application, a menu editor, that can help you to change the menu (and unlock the ‘hidden’ possibilities). If you use that application, you do it, of course, at your own risk.
I have been reported that the menu designer does not work properly with TomTom firmware version 8: the TomTom device freezes on using the newly added menu items. Try to install version 7 if you want to use the 'advanced' menu.
You can download the menu editor from here: http://www.gregoryduncan.com/ttmd/index.php
Unfortunately, this site seems to be down from time to time. In that case, just perform a Google search on 'tomtom menu editor' fo find other menu editors.

8. In my TomTom device my route is different from the route that I planned in the maps window. What am I doing wrong?
Answer
You are not doing anything wrong. If you create a route, you should be aware that in fact you are NOT pointing out a route, but ONLY one or more waypoints. You feed this waypoints to your TomTom device and it will calculate a route, using the waypoints that you gave it and using the conditions that you have entered (avoid highways, fastest route, shortest route, etc.).
Therefore, it is always important to place your waypoints properly, to make sure your TomTom device will lead you the way you want: the locations you want to be or the locations you want to avoid.
This also means the following: you cannot trust the route lines in Google Maps blindly. Your TomTom device may calculate another route (using the conditions you have entered) than Google Maps. That is why it is important to use enough waypoints: the more waypoints, the more accurate the route will be. (A waypoint on each step of your route would guarantee a super accurate route, but that is impossible to do, of course.)
You should also realize that the map in your TomTom may be different from the map that Tyre is using (from Google). One of them may be more actual the the other one. Or there maybe errors on one of them.

9. My TomTom device does not accept itinerary files that were created by Tyre. There is an error message. What can I do?
Answer
Apparently, you are using an older version of TomTom navigator software. Older versions do not accept the author's name in the itinerary file.
So, disable that option from the 'Preferences' window: from the 'Tools' menu, select 'Preference'. Then select the 'Files' tab. Finally, uncheck the 'Add your name to newly created files' option.

C. Tyre and Google Maps

1. When I try to open Google Maps for editing files, I receive an error message.
Answer
If you want to use the Google Maps option, executing JavaScript must be enabled on your computer. Make sure this is the case.
This setting can be changed using your web browser.
Click here to find out how to do it.
If you use Internet Explorer 6, make sure you have installed the latest updates!

2. When I use the built-in version of Google Maps, are route lines draggable?
Answer
Yes, they are. Although it works a little bit different from the way it works on the web site of Google Maps:
- Click the route line somewhere.
- A new waypoint will be inserted on that location.
- Drag that new waypoint to the location where you want it.
- The route line will be adapted accordingly.

3. On calculating, I receive the error message that the directions cannot be computed. What is going on?
Answer
This problem can have several causes:

• You have placed one or more of your waypoints too far from a road. Relocate them.
• You have placed one or more of your waypoints in an area (or country) that is not part of the Google Maps directions database yet.
  You should realize that Tyre uses the functionality of Google Maps. Not all roads on earth are in the Google Maps directions database. That means: you can see those roads and locate waypoints on them, but Google Maps will not be able to calculate directions for those roads (and waypoints).
  There is one positive element: the Google Maps directions database is still growing...

4. I want my waypoints to be displayed using Google Map, but I receive an error message.
Answer
Maybe you have a very active firewall that prohibits Tyre to access the Internet. Try this:
- Shut down your firewall temporarily.
- Try to run Tyre. If there are no error messages, the 'error' came from your firewall.
- Rerun your firewall and adapt its settings to allow Tyre to access the Internet.
The error may have another cause as well:
If you use Google Maps heavily (frequently or with a lot of waypoints in one itinerary, etc.), the Google Maps server might have a problem: you are entering the server too frequently within short notice.
It might take some time before the connection between your computer and the Google Maps server will be functioning correctly again.
There is only one way to solve this problem: wait patiently for some time...
You can prevent this problem if you don't use the Google Maps function too heavily.

5. On calculating a route, calculating stops, but there is no error message. What is wrong?
Answer
This is almost the same as the previous one:
If you use Google Maps heavily (frequently or with a lot of waypoints in one itinerary, etc.), the Google Maps server might have a problem: you are entering the server too frequently within short notice.
It might take some time before the connection between your computer and the Google Maps server will be functioning correctly again.
There is only one way to solve this problem: wait patiently for some time...
You can prevent this problem if you don't use the Google Maps function too heavily.

6. Any time I create waypoints, they are moved to the nearest roads. I don't want that. What can I do?
Answer
Normally, waypoints will be moved to the nearest road, if you create them on another location (no road). This is done to make plotting routes easier.
But if you do not want that (for whatever reason), you can change that: select the 'Preferences' option from the 'Tools' menu. Then choose the 'Google Maps 1' tab and uncheck the 'Place waypoints exactly on roads' option.
If you do this, you better uncheck right away the 'Calculate' option on the same tab, because routes will always be calculated using the roads. So, if you are calculating a route, using waypoints that are spread out over the map, your route will look terrible.
Note: your TomTom will only use the waypoints that you have created, not the complete route! Your TomTom will calculate the route itself, using the waypoint that you provide.

7. On opening the Google Maps window, I get an error message saying 'access denied'.
Answer
Apparently you have an older version of Tyre (5.212 or earlier). Due to changes on the Google Maps server, it is no longer possible to use this older version together with Google Maps.
Update your version of Tyre to the most recent one.

9. I try to locate destinations and waypoints using postcodes for a place, but Tyre always seems to put the waypoint at the wrong place.
Answer
From version 5.4 on, there is a special feature for searching postcodes. Start your search with 'PC:', followed by the postcode that you are looking for, e.g.: PC:TR13 0AQ
For older versions of Tyre, read this:
For executing search actions, Tyre will approach the Google database. There seems to be something wrong in the Google database as it comes to postcodes. In stead of searching for postcodes, you better search for addresses.
Google seems to use different databases, because if you search for postcodes on Google's own website, the proper place is returned. Programmers like me cannot use the Google's website interface directly. We have to use API functions (if that means anything to you). Using those API functions, another interface and another database is used. I don’t understand why. But that is how it is.

14. I want to print my route as text or as an image. How is that done?
Answer
A route can only be printed, if it has been calculated. So, make sure this is done first.
If calculating does not start automatically, click the 'Calculate' button.
After the route has been calculated, there are two options for printing the route:
- Print your route as text (road book).
- Print your route as image (map).

15. I try open the map window, but I don't see anything. The window does not appear or its content is just empty.
Answer
There might a problem with the security settings on your computer.
Maybe you have a very active firewall that prohibits Tyre to access the Internet. Try this:
- Shut down your firewall temporarily.
- Try to run Tyre. If there are no error messages, the 'error' came from your firewall.
- Rerun your firewall and adapt its settings to allow Tyre to access the Internet.
If the problem remains, you may have to change the settings of MS Internet Explorer: if the security setting is not medium (default) change it to medium.
The error may have another cause as well:
If you use Google Maps heavily (frequently or with a lot of waypoints in one itinerary, etc.), the Google Maps server might have a problem: you are entering the server too frequently within short notice.
It might take some time before the connection between your computer and the Google Maps server will be functioning correctly again.
There is only one way to solve this problem: wait patiently for some time...
You can prevent this problem if you don't use the Google Maps function too heavily.

D. Tyre and Google Earth

1. I receive the message that Google Earth cannot be run.
Answer
Just to be sure, check if you have Google Earth installed. You need this application together with Tyre.
If necessary, click here to download and install Google Earth.
If you still have problems running Google Earth, maybe the installation of Google Earth should be repaired.
This can be done with the 'Google Earth' tab in the 'Preferences' window.
To learn more, click here.
If this still doesn't solve the problem, remove and reinstall both Google Earth and Tyre.

2. When I try to display a route or some points of interest, I receive an error message or some other application (e.g. PoiEdit) is activated in stead of Google Earth.
Answer
Just to be sure, check if you have Google Earth installed. You need this application together with Tyre.
If necessary, click here to download and install Google Earth.
If you still have problems showing a route file or a file with points of interest within Google Earth, maybe the installation of Google Earth should be repaired.
It is possible that KML files (or KMZ files) are no longer connected to Google Earth. This can easily be repaired:
Select 'Preferences' from the 'Tools' menu. The 'Preferences' window will be opened.
Select the 'Google Earth' tab and click the button to repair the Google Earth installation.
If this button is disabled (you cannot click it), click here to go to question A5 and learn how to solve that problem.
After you have clicked that button, KML files and KMZ files will be connected to Google Earth again and your itineraries will be displayed in Google Earth.
To learn more, click here.
If this still doesn't solve the problem, remove and reinstall both Google Earth and Tyre.

Still no solution? Then you can try this:
Be sure to have administrator rights before following these steps!
For Windows XP:
1. Open Windows Explorer (e.g. 'My Computer').
2. Select 'Folder Options' from the 'Tools' menu. Select the 'File Types' tab.
3. Select KML in the 'Registered file types' box.
4. If the 'Delete' button is enabled, just press it. If it is disabled, press 'Restore' and then 'Delete'.
5. Repeat steps 3 & 4 for the KMZ file type.
6. In the Explorer window go to the .KML file and double click on it. Windows will open a pop-up to ask us for the appropriate program to use to open the KML file.
7. Select the 'Select the program from a list' option.
8. Another window will come up to choose the program you want to use. Normally is enough to use the 'recommended program'. If you don't want to use that program, you should press the 'Browse' button and select Google Earth from the installation directory. Usually it is "C:\Program Files\Google\Google Earth\googleearth.exe". Click 'Open' to select it.
9. Check the 'Always use the selected program to open this kind of file' option.
10. Click 'OK'.
For Windows Vista and Windows 7:
1. Right click any KML file and select ´Open with...´.
2. Click 'Select default program...'.
3. Select any program, but NOT Google Earth. Check the 'Always use the selected program to open this kind of file' option.
4. Click 'OK'.
5. Repeat steps 1 - 4 for the KMZ file type.
Now both file types are connected to a wrong application. That may seem strange, but it will clear all rubbish in your settings, before you follow the next steps:
6. Right click any KML file and select ´Open with...´.
7. Click 'Select default program...'.
8. NOW select Google Earth. Check the 'Always use the selected program to open this kind of file' option.
9. Click 'OK'.
10. Repeat steps 6 - 9 for the KMZ file type.

3. Both Tyre and Google Earth are installed onto my computer. But Google Earth is not running from within Tyre.
Answer
This can sometimes (not always!) happen if Google Earth has been installed onto your computer from another account.
So, if you encounter this problem, make sure that Google Earth can be run by each account on your computer.
Or you can install another copy of Google Earth onto your computer. You can do this on the same location. (So, as a matter of fact, only one copy of Google Earth will be running on your computer.)

4. Is there any way to display the full route in stead of just straight lines between the waypoints?
Answer
If you see only straight lines for a route, there are two possibilities: either you are running an older version of Tyre (older than 5.5) or there is a problem to get information from the Google database.
If you have a recent version of Tyre,
- check the 'Files' tab from 'Preferences' window: the 'Use route tracks' option should be checked. Furthermore:
- check your firewall to be sure that Tyre may connect to the internet. If that does not solve the problem, rerun the setup.
If you have an older version of Tyre (older than 5.5), read this:
It is best to display to full route with the built-in version of Google Maps (if necessary, adapt this setting from the 'Preferences' window). If you persist in using Google Earth, there is no way display the full route At least not in Google Earth directly.
There is a workaround, however: click the name (description) of your itinerary that is displayed in Google Earth. A popup window will appear. That window also has a line: 'Show route (Google Maps)'. Click that line and your route will be displayed in Google Maps, not just by straight lines, but following the roads from one waypoint to another.
To show your route this way in Google Maps, your itinerary may not contain a lot of waypoints! If that is the case, you will get an error message.

With Google Earth, there is another way to show your route from waypoint to waypoint: if you have your route displayed in Google Earth, each individual waypoint comes with a description that says 'Show route (Google Earth)'. If you click this description, the route will be calculated and shown from that waypoint to the next one.
Until now, Google Earth does not have the possibility to calculate a route with more than two waypoints. I hope that will change in the future. That will make it possible to make the full route displayed in one time in Google Earth as well.

E. If nothing helps...

Still problems you cannot solve? Contact me!