After upgrading from Windows 8 Pro to 8.1, I moved many files to the integrated SkyDrive directory. Everything worked just fine, until recently, where SkyDrive has simply refused to sync. The only exceptions are Office documents, which are synced via another mechanism.

When I add files to the SkyDrive redirectory, they show up as Pending in the metro app indefinitely. When I try to make them online only I get the following error:

Sorry, the action couldn't be completed because the file hasn't finished 
uploading. Try again later. 

Of course, the files do not show up online. When I go the other way, and try to upload files online, they are also not synced to my local SkyDrive directory.