I'm getting the screen below when I start up bridge commander. the only thing that I can think of that I did was trying to get the Defiant's pulse phasers to work.
Yeah, I had that too, the problem is in either the scripts/custom/autoload folder or the scripts/custom/ships folder. Since you said it was the defiant that caused the problems try removing the defiant.py & .pyc files from either of those two folders and see if that gets the game running again. If that works I got some bad news: The Defaint HP files is corrupt but dont worry there is a replacement somewhere on the net... or you could do it yourself with the SDK for BC. I have done that but I can not release it because I used the original for a template and that would be wrong because I didn't do all the work. Sorry.
too late. I just nuked it and started from scratch. *REINSTALL*
OUCH!!! Thats Why I keep a seperate copy of BC from a clean install in another folder. AAnd another with the second last mod that worked in another folder.