I had been having this problem for a while and i had recently puchased the game when it was on sale to see if it would fix it, but it turns out i didnt, so i deleted my whole oblivon folder and also found out that there was another folder that had been causeing all of the problems in my documents i removed that and it worked. The folder was in my documents where the saves are located. i found it because i noticesed that when i reinstalled the game that i was running the same settings from before i reinstalled and not the default settings, so i had found the folder in my documents and removed it