Install this Office 2013 update & watch your frustrations magically disappear!
http://support.microsoft.com/kb/2760358
Issues that this update fixes
You experience one or more of the following issues in Microsoft SkyDrive Pro 2013:
- When a site name contains special characters (for example, "&"), you cannot sync document libraries.
- SkyDrive Pro 2013 constantly displays a "Processing changes" message, even though all files are synced.
- When you delete files or folders for which the upload process has failed, the files or folders become stuck in Upload Center.
- Network connectivity problems may cause SkyDrive Pro 2013 to enter an unrecoverable error state.
- You cannot rename files during the file upload process.