Okay so I just suffered from it again so this is the wrap-up. That dropbox link doesn't work. It will just dc the crap outa me regardless of in-game or lobby. After the gg error message pops out, I cannot do anything. The screen (or should I say the computer) was completely frozen: Can't open explorer, task manager whatsoever; if I click the restart button it will just switch to win7 basic theme with a frozen "everything". Maybe GG doesn't like me afterall
I also acknowledged some people tried the solution of slayerevil in sticky thread, but that gave them the error message as you can find in other threads. Deleting GG folder won't do, the game will just re-update and the problem will not be solved.