Ive been searching several forums and cant seem to find an answer to this. Im using the older alteriwnet version of MW2 with the babycarlos master server for a lanparty and i can only get it to work on windows 7 (iw4mp.exe, masterd server works fine). I get a message saying iw4mp.dat has caused and error. Is there a way to get this working under windows 8 or 10? Ive tried doing the standard compatibility for windows 7 but that does nothing.
May have fixed it by replaceing the .dat file with one from a different alteriwnet version...