I hate to bring up an old post, but I am getting this problem on KISS. I have tried quick and full install, verify and not verify, windows and mac, and reformatting two different flash drives.
I select update and it starts the unpacking sequence, it goes all the way to the end of the unpacking sequence and then it says failure to unpack. If I hit retry, it automatically displays failure to unpack. I have to cycle the power and try a fresh start every time...
Any help????