Yesterday I had no problems, I am level 30. Today Ioaded up the game on PS3 and I can no longer make purchases, navigate through some conversations, or complete quests. I can navigate most conversations but if it requires some sort of purchase it stops right there and I have to back out completely. Nothing changes if I go back into the conversation. For quests, it simply won't let me progress or recognize that I've met the criteria to progress. It has done this for the two quests I have tried since this all happened. In the Take Up Arms quest it doesn't recognize that I have trained with Vilkas. In The Staff of Magnus quest I have defeated the final enemy and recovered the staff but it does not recognize that I have the staff and I cannot proceed any further. Please help.