At first I thpught it was some weapons modifications I've made but it's not, sometime it crash at the end of a game, sometime at start, sometime in mid/late game so I can't really pin point what's the problem is. The only new change I've made is a new screen (with different res that the old one) 
 
See ERRORLOG below.

Update: It seem to guarantee to crash at the end of a match, either team wins doesn't matter. CPU match.