I bought the software and installed it. When I am exporting the project to any format, it will "convert" until it gets down to 99%. Once it gets to this point, the software hangs up and will not complete the video. I have even left it at 99% overnight (six hours) and it does not finish the export. I have uninstalled the software, checked all my drivers, and reinstalled the software. I have bought a license (still will not work). I am running Windows 8.1. Any help?