Bethesda Game Studios Forums have word that the PC edition of the Broken Steel add-on for Fallout 3 is suffering a problematic launch on Games for Windows (thanks Eurogamer). Attempting to install the DLC results in a "not a cryptographic message" error, and there is speculation that the size of the download is not correct. Update: Word from Bethesda is this is a GFW DRM error: "We're seeing the same error, which is a Games for Windows Live DRM install error. Microsoft is working on fixing it, and we'll let everyone know once we've verified it."