I am having the same issue right now, but only the DragonBorn DLC. I dont have it in my data files under the launcher, but it shows up in BOSS, Wyre Bash, TESEdit, and NMM. As a matter of fact, none of my mods are showing up in the launcher at all, except for DG and HF. Not even update.esm or .esp. I don't use steam. Never seen this happen before. Installed the game, followed by DLC, then most current update. In game I have all mod content available and working with a bash patch, Dawnguard is playable, update is posting to the in game system menu, but Dragonborn is no where to be found. http://www.youtube.com/watch?v=gnMdulB4oVI This worked for me. Pretty straight-forward fix. On to the next bug, major hangups in game and CTD.