Alteriwnet Error

Hey guys, I get this problem that my iw4mp.dat doesnt work when i start alteriwnet.. ive played the game for several months with the same file but suddenly it just stopped working. could somebody please help me out? i really want to play mw2 again :S
tried to unpack the files over and over again but same problem

THANKS FOR ALL REPLIES! SOLVED NOW THANKS :)

Delete your cache.xml and enable updates..

has there been an update than? :O

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Originally Posted by lolbie

has there been an update than? :O

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Nah.. but if the files are corrupt it should fix them.. else he can just delete the faulty file :3