idk maybe ur DLLs are missing, reinstall and reboot
Screen shot would be helpful.
When the "box" pops up does it say anything? Instead of waiting for somebody to post an answer you could uninstall and reinstall the game by the time somebody posts somthing useful.
ok im reinstalin close thread
Dam I got aproblem too .. Everytime I start combat arms... When I pick a server it says error buffer overrun and the game freezes. I have vista