Yeah, umm I´m a newb to tremulous and not too good with computers and had this question, I have lots aof crashes involving certain levels the only safe ones are Tremor and ACTS I´m afraid to try other ones, one that always crashes is the transit station it never works
unless you provide more information there's nothing we can do to help you.
Does it crash the entire computer, or does it just exit to the desktop? What OS are you using?
More info-
OS-Linux
it exits the game when I make a server and freezes with all the other lvls
Run the game from a terminal, post the entire output here(when it crashes).
More specifically, run the game like this:
tremulous +set developer 1 &>error.log
Also, what Linux distro do you use?