Error 200, Launcher shows a white screen and closes.

http://puu.sh/fC2OB/0256a33373.png
A friend of mine is trying to play the game and the launcher gives the error and won't even bother updating. For reference we've run it as an admin, we've reinstalled the game 3 times on Steam and even tried the non-Steam version yet the same error persists.

Any help would be greatly appreciated.

Still having this issue. If anyone knows anything we could try to fix it then I would greatly appreciate it.