This can be fixed by resetting your hard drive cache. Xbox360 After defeating the Archdemon, the epilogue may fail to load, and reloading the game may take you to after the epilogue. During a given playthrough, it may not be obvious whether an issue is a genuine bug, a hardware problem, or even the unexpected result of choices within the game. It should be noted that a good number of these bugs may have been fixed in later versions or by official patches, and that all of these bugs represent contributors' subjective experiences with a particular playthrough, version, platform, and game machine. See Category:Dragon Age: Origins bugs for a more thorough list of affected content in the game.
Bugs that only affect specific quests, characters, items, locations, or codex entries should be described on their respective pages.4.3.3 DLC and Dragon Age Updater service.2.7 +X% to healing effects received bug.2.2 Xbox 360: Specializations unavailable.