Seems I'm not alone with Nvidia card problems
To see the path c:/users/{username}/appdata/local/visionaire editor/viseditor.log you must enable the win7 hidden files and folder:
- In the search box on the taskbar, type folder, and then select Show hidden files and folders from the search results.
- Under Advanced settings, select Show hidden files, folders, and drives, and then select OK.
In appdata you can also find the log file of your future game, if you provide a name company in the game property inside the Visionaire Studio.
This is for the future of course