Playlist "no content"

[UBaum]

Hi together,
I've updated to 2.1 update 210 twice, license (1) Windows 10 and (2) Synology DS118. I manage my files and playlists with MediaMonkey and using StreamMagic app/Cambridge. The app shows both minim-librarys and they work well except the playlist function: The DS118 based library shows all playlists but when I try to open it shows only the message "no content", the same playlists are recognized by Windows based minim library and by Synology based library DS Audio, so it's a mystery for me that I can't get access and need to start the Windows PC to use the playlist function.