To OP:
Contact Larian support, as recommended earlier. They have a pretty decent turn-around time (usually about 24-48 hours), and you reference this thread if needed. Provide all your comp info for them, and the trouble shooting steps you've already tried, as well as the problems you're having. I'm fairly certain they will be able to help you.
You can email them at support@larian.com-- I believe Lynn is the one who 'answers'. She answered an email question I sent within about 24 hours of me sending it. Was very pleased with the assistance I received. That's my suggestion, since the forums have not provided an answer for you (and I don't have any suggestions, because I'm not that computer-literate!).
Best wishes. Ego Draconis was a lot of fun to play, and I'm working on the revamped version now (DKS) (going slower, though, because I have less time then when I first got ED).
All best,
~~CierraShore
