Apparently, I am reading that there have been major issues with the release of Modern Warfare 2's Stimulus Map Pack, which was released earlier this morning. From what I understand, the game needs a title update in order for the maps the work properly. This update did not push out properly, and many cannot play on the new maps because of this. Basically, if you have downloaded the maps, but have not been prompted for a title update when you loaded MW2, you will have issues with the new maps.
From what I understand, the problem with the title update has been fixed, and the update should be pushing out properly nwo. There is nothing that can be done but wait until you receive that title update. Updates concerning this issue will be posted here when/if they become available. Please post any thoughts, comments, and problems with the map pack
here, so that we do not have 101 MW2 Map Pack threads.
UPDATE: It seems that the issues have been solved, as posted directly from Major Nelson's Twitter Account:
Unattributed Quote:
"The MW2 Title Update is now live! It may take a few minutes for everyone worldwide to get it - our apologies for the delay.