Is it possible to miss your opportunity to enter the thieves guild training room? I can't seem to trigger a dialogue option for anyone to open the 'key required' door.
I've been a member of the guild for a long time now and have added two vendors in the ragged flagon already.
This is my second play through of Skyrim. I played through the first time at release and didn't have any trouble getting in the room. This time, I ignored it when I first joined the guild. My lockpicking skill was already high, and I figured, eh, I'd wander in eventually... Looks like this may be impossible now. Am I out of luck?