Re: error uninstalling: 5005 : 0x8000ffff

Recently I have downloaded Custom Content through the store; Mostly pets and a few buildings. Then I couldn't access the Create-A-Family, as it would try to load forever. I thought updating might help, as I have never been able to update before (I have version 1.38.151, it wouldn't work because of the following error.) Then, the following error appeared halfway through installation:

Error Code:    -5005 : 0x8000ffff
Error Information:
>Kernel\KernelMedia.cpp (95)
>SetupNew\setup.cpp (851)

I then deleted all of my custom content and uninstalled my expansion packs, Supernatural and Pets, and then tried to update again, but the same error appeared. I had then tried to uninstall The Sims 3, but the same error appeared again. This has been happening since I've first installed the Sims 3, about a year ago. Any suggestions on how to fix these?