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I had this problem constantly if I tried to run Usleep, I restarted new game I don't know how many time's ( Over 15 times, from Helgen to The first dead dragon ) trying to get past this with USLEEP installed. I know is old post, but Just for anyone Else with this Problem, who needs help, and all Else has failed them, inculding the "Do this", or "Oh! it is a problem in your Loaded Mod's", or the really simple one's " You have something installed Wrong " or " It works find for me " Or " that problems was solved in a Patch way back there, Read this post I googled, and put here so I would look Smart.
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But I still cannot found anyway to get rid of this problem with activating the "Unofficial Skyrim Patch". I try to load Skyrim only with skyrim.esm and update.esm, then I can buy the house. Finally, I find out that the problem is caused by the "Unofficial Skyrim Patch".
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I try to unload all the mod and the problem still exist.
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