I'm working in Premiere Pro CC 2014 on an early 2014 iMac. I started to notice my session was getting kind of buggy - audio clips started missing from my timeline, effect controls on some of my video clips had set themselves to the defaults. So I was trying to fix some of these things as I was editing. I save compulsively (like after every couple of edits), so I had not noticed that my session was no longer auto-saving.
Suddenly Premiere crashed. The recovery file will not open "due to an unknown error." The original file that crashed will not open either (same message), and I notice the file size is about half of what it should be. When I tried to open an auto-saved version, I discovered that the last auto-save was last night at about 10 p.m. (I quit working last night at about 1 a.m., so it just spontaneously stopped autosaving midway through my edit session.)
I followed all the suggestions I could find in forums. I trashed preferences, and I moved all my media into other folders. But the session won't open even far enough that it starts asking for media. When I create a new project and try to import my old edit sequence, dynamic link won't even get to the point where it asks me to select what sequences I want to import. It just sits there forever trying to open the file and can't.
Additional info - As I look further into the problem, it's even worse than I thought. The autosave files that say they're from last night are actually referencing work from days ago. So evidently, my auto-save is either putting incorrect time stamps on the files, or the project files are referencing old sequences. Either way, I cannot seem to locate a project file that contains a reasonably recent version of my cut, even though the time/date stamps on the files indicate they shouldn't be that old.