As the title says, its on the thieves guild quest "the elven maiden".

So i stole the bust from the undercroft,Plant the statuette in Myvryna Arano's cupboard then alert Hieronymus Lex.

after persuading him he comes allong to check if the bust is really there,we enter the house he checks the cupboard and then leaves the house, its that moment my character gets stuck, i cant move or exit the house.note that Myvryna Arano is not present in the house. I tried day & night time, wait 24 hours, not entering the house with lex but nothing seems to work. and were the hell is Myvryna Arano ?? maybe if i talk to her i can trigger the quest?? please some help because its very frustrating.

This is a bug. This happens when you put the statue back while she is not in her house. If you are on PC you can fix this by typing enableplayercontrols in your console.

If you play on XBox or PS3 you're out of luck. You'll have to revert to a previous save. When you do, wait until Myvryna Arano is inside her house before you plant the evidence.

Its on PS3. I dont have an earlier save file :S butt I saved just after i stole the statue from the undercroft, and when i talked to methedrel on the waterfront. Is it possible to go on with other missions and return after a while to see if she is in her house? Or maybe skip this quest?

I think you should be able to continue from this save just fine. Load this save and then wait outside Arano's house. When you see her go inside, go in and plant the evidence. The quest ought to work if you do this. Good luck!

Ok, I will try this, i hope it works, I wil post it here if it worked or not.