I made a full reinstallation. And now it works.

20171013_214053 VER:10000 BUILD:10009 PLATFORM: WINDOWS WinVer:6.1.7601.23915 0: NVIDIA GeForce GT 120 CPU String: GenuineIntel Stepping ID = 7 Model = 7 Family = 6 Extended model = 1 CLFLUSH cache line size = 64 APIC Physical ID = 1 CPU Brand String: Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz Cach...

I already host a game and it's still going. But now i can't make a new challenge. The game freezes and it says this:
Unhandled Exeception!
Exp Address: 0x004909093D
Exp Code: 0x0000094 Exp Flags: 0