This was a bug with installs of 2000 - 2008 not seen it in 2012 or above, but the fix back then was to perform the below
Open Regedit
Find the key "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager"
Rename the "PendingFileRenameOperations" value to "PendingFileRenameOperations2" OR Delete the "PendingFileRenameOperations" value, depending on how safe you feel modifying the registry
Restart your machine and then try again