Darthwest

i was playing voltz and it said there was a new update available, so i tried. when i tried to open it back up it said there were 2 copies of mekanisms, so i tried emptying the cache to try to fix it. i restarted the launcher, and it wont do the update. ive redownloaded the launcher, replaced java, but still nothing. im on mac using lion , so everythings hidden and i cant find the files. i cant even open any other mod packs! it should work because i was playing it. please help!