Thanks BardurM, unfortunately that's when I get the dynamiclink error. Or it will lock up at 98% of importing the file to the new project.
I went into my Auto-Save folder and successfully opened an Auto-Save project. But when saved, and re-opened, it locks up. So I tried this again, but deleted 2 of the most recent footage files I edited, saved, and it re-opened fine.
I'm still not sure why those files would cause the whole project to be corrupt.