Hey, first post. Sorry it is a little bit of a repeat about this bug but nothing has worked so far....
I had issues with my CD key (copy purhcased from Steam) and Crysis, solved it by editing the %CDKEY% line by manually entering the key with "-" every four characters. I have logged into Crysis Wars, connected to a PunkBuster'd server. I've also run Crysis Warhead.
I downloaded both Crysis Wars and the MWLL mod today; MWLL patched a few times. I tried the vcredist_x64.exe fix (I am running 64 bit Windows 7), and ran Repair Build.
I still get the same issue. An almost immediate "Warning: Disconnected from Server."