Linked Playlist not displaying any titles

[LRC]

I have a Windows Media Player playlist (music) that I can open/play in WMP with no problems. I follow instructions to create a linked (to it) playlist in Mezzmo and I can see the new playlist show up in my Mezzmo Library but when I select it the only thing that shows up is a folder icon - none of the songs in the playlist are listed. I've tried maintaining the playlist, copying it and renaming it to a more simple file name and re-linking (no spaces, etc.), all with no luck. Screenshots of linked playlist properties and main Mezzmo window showing only a folder icon are attached. Any suggestions how to fix this?