Hi Daniel,
I had the same issue and I just found a work around.
Simply write down the sub directory under "C:\Documents and Settings\User\Local Settings\Temporary Internet Files" in my case it was "Content.IE5" as I was able to see inside this directory "Temporary Internet Files" by scaning it with a virus scan.
Open File Explorer and write the full path in the address bar "C:\Documents and Settings\User\Local Settings\Temporary Internet Files\Content.IE5" then select all files & delete.