Photopia not responding when importing video files associated with a style

I have been having issues with slide styles in the latest version.  When I scroll through my installed slide styles that are associated with a slide style.  I have attached a screen capture.  This happens with many different slide styles so this is just one example.  Photopia gets stuck on "not responding" and I have to close the program and restart.  Please let me know what may be causing this issue.

Thank you, Bonnie