If you are having problems opening OpenShot Video Editor on Ubuntu 12.04, this may be the solution to your problem.
This solution can work in a lot of situations when dealing with Ubuntu software, but I have only seen it suggested when other fixes do not work.
The error that prompted me to make this video is below:
------------------------ ERROR 2 -----------------------------
Failed to import 'from openshot.openshot import main'
Error Message: 'NoneType' object has no attribute 'set_cursor'
----------------------------------------------------------------