Hey, i got it working. I'm not sure how exactly, but keep trying! I tried to clear cache (I was getting an error about it before) to submit a bug report, and it let me clear the cache. After that, i tried doing what this thread suggested, and it worked. Good luck trying to get it to work! :)
Agreed, i found out that technic has thaumbcraft, which i wanted to play after watching a bit of direwolf20's lets play season 4, and wanted to see what the mod is all about. I had tekkit working yesterday, but it stopped working when i tried to do technic. Now tekkit doesn't even launch.