Hey FTB, I am having a major problem with all 1.6.4 mod packs. Whenever they have finished downloading at the point where they should launch or start downloading the jar they say "error extracting natives: Unexpected end of the ZLIB input stream" and i saw this on the crash issues form and it said to run the launcher as a administrator which i have tried and it still does the same thing. I have 3.5 gigs out of my 6 allocated to FTB and this has never happened with a pack before 1.6.4, I would appreciate all the help I can get so i can play FTB 1.6.4