The New Fallout DLC Honest Hearts of Vegas seems to be creating problems for users of Xbox 360: once you have downloaded it, seems to be incompatible with the Xbox 360 version of the basic game. The problem is that you start the contents due to a bug in the mission "E-DE, My Love", a problem long recognized by Bethesda. The developers said they were working on a patch to fix this bug but unfortunately there is good news for those who have a backup that contains this error.

Apparently the only option for those who have been afflicted by this problem is to wait the release of the patch and then replay the game to access the contents of the DLC.

Bethesda is expected to release information for future patches.