Okey For those Who have Windows Vista, and cannot play Jedi Knight Academy, here is the solution to all your problems.
Do not bother Reinstalling the Game because who ever say's that is an idiot and should be shot. Or those who say Delete mods and put them back in one by one, Shoot them again.
Simple Solution is Vista Hates JKJA All you need to do is Right click JKAmp.exe/JKAsp.exe Propertise, Compatability Run as Administrator (aka admin).
Viola done, Now run JKJA and start playing, Just dont bother doing reinstalls because they dont work! Trust me ive tried it million's of time's.
If you still have the same problem doing this then i do not know, go to
www.google.com and try find a solution that way.
If you need any help doing this you may contact me.
(By the way i am not one of the team member's so do not ask me about Server hostings).