I've started Skyrim again after purchasing 2 out of 3 DLC packs for it on the Xbox 360. i'm level 43 and I'm looking to get the full aame achievements for this game as i love it. I've done part of the Thieves Guild questline but hit the problem after the Hard Answers mission.

I've done that and when I go back to the Thieves Guild base I've to meet with Karliah but she ain't there but shes stuck in snow veil sanctum and I've tried killing her but that doesn't help. I only have one save from earlier in the game and don't want to go through all the game again as it'll put me off doing the new DLC.

I'm wondering if anyone knows how to fix this problem as I want the achievement. Any help would be much appreciated.