Export Issues

I'm getting the error message Process Finished Unexpectedly when I try to export my video. I've seen others mention this same problem.  I have Pro 12.3 version.  Nothing will export from short videos to long ones.  I shot a stage play which is about 2 hrs. long, and I need to get that to my clients as soon as possible. This is a bit frustrating but I'm hoping someone could help me understand this, and help me out with a solution.  I shoot with 3 canon G  20 and Blackmajic Design Atem Studio, I.m Running windows 8, my system is good on specs, but I'm clueless as to whats going on. Thanks in advance.

This discussion has been closed.