WoW Closes after a little while?

[Hakmeister]

so im using the latest wowme, i think its 3.0+ or something. but oh well i digress. im currently running the gnome male > undead male .mpq and for some reason when im doing bg's my wow just freezes and closes. when i try to log back in i see my char and it freezes and closes again. then when i try to run regular wow without wowme it gives me some error. i have to move the .mpq file and wowme file somewhere else for my wow to work again. currently running windows vista. please help me. most of these problems have been in bg's.