Crash to Desktop

[chris1611]

Hi,

 

When I want to host a LAN-Game the Game crashes to the Desktop just after it has finished loading. No error or something. In singleplayer everything works fine.

 

Also when i want to join a internet-game it says:"The CD-Key is not authorised..." Perhaps the crash has something to do with that? But I use a original! Can anybody help?

 

My system: Athlon 64 3000+, 1GB DDR-RAM, GeForce 6800GT, WinXP SP2

 

Thanks

 

edit:same problem witch the newest patch installed.