Nobody can tell you anything without exact system info or other technical details like the system crash logs. Just telling us generics like that it's Win 7 is not at all useful.
Have you considered updating AE? The latest version (14.1.0.x) has a lot of bug fixes.
The problem has been fixed, it had something to do with a long folder directory. I copied a project onto my desktop, and it seemed to work fine.
Appreciate the comments!
Thank you for sharing what worked!