I've got a bit of a strange problem.  I had a whole bunch of files syncing to skydrive under windows 8, but over the last couple of weeks I was having issues with a lot of duplicate files being created.  I cleared up the duplicates, and removed both online and offline copies of the files.  Now, I should be able to sync normally, but I have an error overlay on the skydrive icon, and when I click "show problems" the metro app comes up and says "Files can't be uploaded because there's a problem with a file or folder".  The filename it gives (a local file path) does not exist on the local machine.  So far I've tried moving the skydrive folder to a different drive, disabling and reenabling skydrive syncing through group policy, making sure that the online copies of the files were deleted (and removed from the skydrive recycle bin), and several reboots.  Nothing seems to have worked, and now I'm not able to sync file changes to the cloud from this PC.  Why is skydrive trying to sync a file that no longer exists, and is there a way to remove it once and for all?