addressed Export problem

[Lancelot Chan]

I've encountered this problem twice. The problem is when I export, I will shutdown the project by making a new blank one and just leave it there, to save CPU power for the export. This doesn't cause the problem. But if I clear the unused cache as well after shutting down the project, the video exported will have frozen screen at the point I cleared cache. 

[borate]

Don't see that here, but perhaps the cache is being cleared of files that it needs.  Don't clear it.

And creating a new sequence likely doesn't gain much;  the export sequence is active.

[Lancelot Chan]

Will do. I close the project after starting export usually, so only the encode process takes up the majority of my CPU. Otherwise, videopad will also takes up a large chunk of CPU to build the preview. 

[borate]

If you attempt to close the project during export this will appear... 

If PV has been allowed to cache fully, there should be no timeline activity during export.