Update errors AGAIN.

Code:
 The file "C:\Program Files (x86)\Common Files\Blizzard Entertainment\World of Warcraft\Uninstall.xml" could not be renamed to "C:\Program Files (x86)\Common Files\Blizzard Entertainment\World of Warcraft\Uninstall.xml.Trash". (ConflictManager::ResolveConflicts/3) To check this installation for problems, click the "Repair" button. The Repair tool can automatically fix many update errors.
I ran the launcher from each WOW and I get the error again that it cannot patch the file.

This is after I had to reinstall. Do you all reinstall after every patch? I cannot figure out why I get errors.

Maybe someone can provide the directions on manually updating the registery keys so I can do that.