I have created an Active playlist for music videos using the following parameters:-
Smart Filter: Category contains Music Video
Keyword Hierarchy: Album/Series

The files I want to include in the playlist have the category "Music Video" assigned to them.

Mezzmo has created a playlist showing the files so the filter seems to be working, however, I'm unable to stream the files to my devices - I either get an error message "No playable file" or the playlist just doesn't appear at the device.

If I navigate to the files through the normal folder structure, the files play fine, so can't figure out what I'm doing wrong? Help please!