Hi, I just solved an error with the map editor and would like to share the solution.
Problem
When I try to start the map editor, I got a message that the file "support\tomes\tome.1" is missing, see attachment.
Solution
Reinstall from an account with admin rights.
First I installed on an account without admin rights and got a few errors during installation (about registry regedit). These errors however did not seem to affect the game. The game could run but just the map editor did not work. Then I did a second install using an admin account. Installation finished without error messages. And now both the game and the map editor work!