Board Thread:Questions and Answers/@comment-5885468-20121219195535/@comment-1757231-20140826172324

Justaname77 wrote: i dont its how it downloaded cause its only been doing it within the past week Go to your .technic folder (in your AppData folder), go to tekkitmain, and delete everything. You might want to save a copy somewhere else.

Then, just re-install TC.