Build tome mods bugged?

yesterday i isntalled the campaign build time mods to my comp, thay worked fine in sigle player and did exactly what they were supposed to do, but when i tried to play online i couldnt play with anyone, i hadnt had those problems till that night so i uninstalled them and replaced their files with the original ones, now rtw wont even start! it either cuts off completely and shuts all programs down (not freezes) in the process, a couple times it left the message "Initiation of 3D audio failed" ive tried evrything from uninstallin to system restore, nothing works, i need help! :help: :wall: