Experimental: Error Code 7

Hi Guys,

I try to play the experimental branch but when i Join Server i keep getting this Message: “Failed to initialize the game procress. Error Code 7”.

MY Specs:
Win7 64bit
16GB DDR3 RAM
Geforce GTX 680 Driver Ver. 337.88
Intel i7-2700k

Anybody here able to help me?

Steam\SteamApps\common\rust\experimental\rustclient run as administrator.

thanks, had the same problem. Not that experimental is very playable at this very moment