Comment 57 for bug 213863

> No need for these types of workarounds, this is fixed, please don't keep
> suggesting them; other people may think they're necessary. At this point,
> the new version should be in the archives and a standard system update
> should resolve the problem.

This does not seem to be true. My system did not detect any other updates and failed to upgrade while in this state. Performing the manual override as explained in the post above yours seemed to fix the problem.