Music scores not working

I have just updated to PE 2025.  I have created a video with added PE Music Scores.  When I open my video to edit it, the added Music Scores are hashed out and don't play. If I attempt to reload them from the Music Score library, I get an error:  "The score cannot be added as some audio files seem to be missing".  If I try to re-download the score there is no way of doing it - PE seems to assume that it is already loaded.  I have uninstalled and then re-installed PE but nothing changed.  Can anyone help with this?