What happens to the Revit.ini file when Add/Remove programs is selected?
 
 
 

When you select Add/Remove from the Control Panel's Add or Remove Programs utility (Win XP), or Programs and Features utility (Vista/Win7), the Add or Remove Features page displays. Depending upon what is added or removed, the following paths may update in the UserDataCache\Revit.ini file:

The next time Revit opens, it copies the following new paths into the user's profile Revit.ini file:

NoteThe Revit.ini file is located in both the UserDataCache, and the user profile.