Didn't check back to see if this was already asked, just want the answer short and sweet. Do I need to be connected to Live to have the Dawnguard DLC work? Both times I've tried to play Skyrim while my internet wasn't working, every DLC except Dawnguard was working. It didn't show up in the Add-ons list. Should I redownload it? I've heard it only works offline on the console you purchased it on (I bought a new Xbox console a few months back), but every other game and every other DLC for any game works right, even Hearthfire and Dragonborn. Is it just this specific DLC? I have no idea what's going on, it's got me stumped. I'm assuming at least a few other people have run into this issue.

EDIT: Just to make sure I'm clear on this; Dawnguard works fine when I start the game while connected to Xbox Live. Hearthfire was also downloaded to my old console first. Dragonborn is the only one that was downloaded to my current console first.