I was just working on a project all night and I got to a point where I just needed one more title screen to finish it up. But the title screen was in a different project. So, like I've done many times before, I saved, opened the other project copied the title (Default Stills with text) and tried opening my other project back up. When I do this, I get the error "This project contained a sequence that could not be opened. No sequence preview preset file or codec could be associated with this sequence type." I've tried opening previous auto-saves and I get the same error.
I'm running Windows 7 64bit with Adobe CS6
Premiere is on version 6.0.0