a message box pops up, saying it only works with owned videos.
It's normal. Only the videos that you own have a location. The message is to help the users understand that it doesn't make sense to use that filter with the whole database.
causes the program to hang completely
If you wait long enough, several minutes, it'll finally end its calculations.
Thank you very much for reporting this problem. It happens that I'm already aware of it:http://www.coollector.com/viewtopic.php?f=1&t=1106
I've been able to make the process much faster, and tomorrow I'll release a new version with this emprovement.