Dota 2 Beta error

So, Valve just sent me a beta invite. But when I start the game i got this error: "Unable to load version from steam.inf". I was looking for a solution every steam and dota forums but I couldn't find the solution. I found this. It's for L4D2 but with the same problem and someone says you have to copy this into you're steam.inf: "NetworkVersion=2.0.4.2
PatchVersion=2.0.5.9
ProductName=left4dead2
appID=550
or verify cache".
Well that text is for L4D2, so it won't work with DotA 2 but i tried to recover it by verifying cache but it's not working. So if someone can copy the text from steam/steamapps/common/dota 2 beta/dota/steam.inf, i would really appreciate it :). Sorry for bad english.