Losing edits. Premiere isn't saving or autosaving.

There is something seriously wrong with the latest version of Premiere. I've had 3 projects now that haven't saved after substantial time editng, and the autosave, which I have set to every 5 minutes, isn't doing anything either. I have a habit of saving my projects every few minutes because I've lost things in the past (I'vebeen a professional editor for over 20 yeras) so I have little reason to think it's user error. Something is haywire and for whatever reason they're not saving. The only thing I can think is that when I have multuple projects open and I go to close Premiere and it asks me if I want to save, that it's only saving the project that is highlited on the projects payne. It's either that or it's literaly choosing to not save my work just because. I ahda this issue for the first time back in the Spring but it seemed to go away. In the last 3 weeks, since upgrading to v.24 it's happened 3 times. 

This is infuriating. Hours upon hours of lost edit time. I should be charging Adobe for my lost time but instead I'm paying for this silly service.