It would seem that currently saves are doing the funny thing they did a while back, where they don't like to save and get corrupted. I would recommend waiting to publish, try stamping saves you want to publish or save them to your hard drive.
Signs of corruption include not being able to load the save, and it having an image of a sign in the centre.
Nevermind it culminated in HTTP 500s,
(P.S. I want to know what that sign says but it's too small)