The Call of Duty 3 Valor Map Pack is now available, but you won't be able to use the new maps because they don't work.

Call of Duty 3 screenshot

The Valor Map Pack will cost you 800 Microsoft Points and in return you get five new multiplayer maps, which can be played online, split-screen or using system link. There's just a slight problem which might hamper your enjoyment of the new maps: they don't work.

Activision claims to be aware of the problem and is already hard at work creating a solution.

"We understand that there are problems with the Valor map pack once it is downloaded - we are working closely with Microsoft on this right now, and we will have the issue resolved as soon as we possibly can," a Treyarch representative explained on the Xbox.com forums.

However, a fix hasn't arrived as swiftly as had been hoped.

"We've made some progress through cooperation with Microsoft. We had hoped to resolve the technical issues with the map pack by the end of the day today, but it looks like that will not happen," reads a further post on the Xbox.com forums.

You can check the progress of the fix for yourself over on the Xbox.com forums.