Guys...there is NOTHING wrong with your harddrive and you don't have to delete any info on it.
There is an issue with the new Map packs and COD:WAW that causes this. Myself and a few friends have this issue, but there is a simple solution.
When it says that you don't have a Map Pack or you can't select a Map because it greyed out, simply re-download the map pack. This CAN be done while in the game...so no need to leave a party.
Also, You technically won't be re-downloading it as it WILL find it on your Harddrive and within 2 or 3 seconds it will complete.







