I am running Windows RT 8.1 on my Surface RT.  On this PC, SkyDrive has downloaded all of the stubs (so my file structure and file names show up), but no files will open, either on the desktop or in the modern app.

The app (for whatever file type I am trying to open) opens up, and the progress bar just... goes forever.  I can access my SkyDrive from the web with no problems.  I have rebooted, and waited a day, but the problem persists. I cannot open anything on my SkyDrive.

How can I troubleshoot and resolve this problem?