Anyone who is having this problem, is in either one of these situations
- you have installed ED at some point, but deleted the physical data from your drive. This leaves the registry settings from ED in your computer. If you then procede to install FOV, the installer will think you have ED installed and only install FOV files into that directory.
- you have installed ED in a directory but moved or changed that directory. FOV will install to the old directory path.
in both cases, the problem is that the game is starting up only on Flames of Vengeance data. No Ego Draconis data is present or can be found by the game.
This is easily resolved by first installing ego draconis, then installing flames of vengeance on top of it.