File Changed?

Hmm...
When I start Crossfire, eveyrthing loads normal, untill i get this screen

HGWC
File Changed: W[2007] L[0]
crossfire_CF.exe

The only way to play again is to Re-download crossfire, I've been doing this for couple times but I'm sick of it, I wanna play normal again and not download crossfire every day over and over!
Please someone, replay as fast as possible, you'll help me alot.

Greetz, Availed