This is an odd one. Since installing Honest Hearts, my game will tell me Dead Money is corrupted and will not load that dlc...but only when I am playing offline. When I connect to Xbox Live everything works fine. Anyone else experiencing this or know of a fix?

well i heard there gonna release a fix for that in a bit.

So it is a known issue? That would be a relief. Do you happen to remember where you heard about it?

Try to DELETE DEAD MONEY, then go to your Profile, Download History and Download again.
OR
You have Downloaded Dead Money with Different GT/Console??

To Use Downloaded Content Offline u need to make the Purchase with that particular Console....

I originally purchased it on my last 360, but it got fried and I bought another. I chose the "download again" option on my new one, and now I can't seem to play it offline.