soratehcat

I don't know what's going on, but ive tried reinstalling my tekkit launcher, tekkit itself, the other modpacks, and restarting my computer..Everything. I cant seem to start it. It goes and goes (the stuff that flies on the right), but when the game is about to launch, it just brings me back to the launcher! Whats worse: it's only Main Tekkit thats the problem. I can launch Big Dig and Tekkit Lite no problem. Can anyone help with this?