Board Thread:Skyrim/@comment-108.238.224.19-20130331211734/@comment-24.2.64.84-20131218180750

I had the same problem. I finally went back to the Thieves Guild and they told me I was suspended from the guild for some reason. I had to complete the quest 'Reparations' to get back in (give them 1000 gold). Not sure what I did to get booted from the guild but that solved it for me.