"Doctor, I feel pain. What can you suggest me?"
You know, you should provide much more information about your issue if you rely we can help you. Telepaths are on vacation.
What do you mean by crashing? Standard Windows dialog "X application has stopped working" or jamp console?
When crashes usually happen? Only at spawn or during the game or only when map changes? Does it happen on any map, or on only some specific maps? Describe it in detail.
Does it happen when you're playing as droideka only, or other classes are affected too?
What is your graphical card?
What engine do you use to play game? jamp, MBII, jaMME?
MBII Launcher => Settings => Repair installation.
Post latest log from "Jedi Academy\GameData\MBII_Launcher\logs" here.