Wow Crash on BG

Hi, i have problems when play bg, due to some times the application give a crash, exiting me from wow offcourse.
How could i see what happend? Perhaps is a addon? i dont know.
By the way, i have noticed its only in bg; in normal world, thats never happened.

Realm: NELTHARION
Player: keikko
Addons used: Bagon, Bartender 4, omniCC, Quartz.

Thanks in advance.

Note: i have a .txt from the error output that wow prompt, but i dont know how to upload to this ticket, may be its useful.

disable all of your addon and try some bgs, see what happens