My character is a hybrid thief, so naturally, the Thieve's Guild quest is the one most suitable for my character. The trouble is, it's broken

*possible spoiler*
Anyway, right after I turned in the tax records to Armand, I clicked on him to see if he had anymore special jobs. The "special jobs" choice was missing and hasn't returned since! I had already fenced over 100g worth of stuff, and my journal reflected that. It said that I should go talk to Armand for more special jobs. Since then I've fenced over 600g worth of items, and the special jobs tab is still not in his options. Has anyone else had this problem? I did a small search of the forums before I posted, but didn't see anything. It is pretty discouraging. If anyone has any suggestions or knows how to fix this, please let me know.
Thanks again,
Jeraceira