Its the main quest straight after reaching athens, I gone through the five levels Athen Catacombs and beaten the big bad boss Alastair then I suppost to speak Phadrus. Phadrus is not interacting with me and I cant speak, he stuck in a small corridor, I tried replaying it but it just the same and the main quest wont move on without me speaking to this old man. Any one got any ideas as I dont really fancy playing from the start again. I already install the patch the other day.
Luckly I remember that I had backup my hard drive recently so I took my backfiles and replace the charactor files in my games folder. I would recommend making backup copies. It worked for me as I just had to play catch up but I did complete the quest this time.