Ok, so I've completed all of the main Thieves Guild quests, and I'm now working on "Returning the guild to its former glory". Here's my problem. No one in the Ragged Flagon will speak to me. Every time I try and talk to any of them, they just say "I"m surprised you're even showing your face around here after what you did!". I can't think of what I could have done to cause this. Haven't murdered anyone or done anything that would have made them mad to the best of my knowledge. Help?