[Update]
I just found only one auto save that finally worked. And it's one from yesterday, the second oldest out of 6 auto save files. What the hell is that? This is just tad worrying.
[original]
So out of the blue, Adobe Premiere decided to corrupt a project file I've been working for 8 hours on, and including ALL but one of the backups it made. The file I was working on worked just 20 minutes ago. "The project could not be loaded, it may be damaged, or contain outdated elements"

