BubbleUPnP and Pause/Next track

[MartinBarrell]

Hello

I am using BubbleUPnP to play from MinimServer 0.72 on QNAP ARM to a Marantz MCR603 and am placing FLAC format music.

I find that pause does not work unless held down and then it stops the track rather than pausing. Next track does not work with Action failed (code 501).

Pause and Next track work if I use the MCR603 as the control point.

Pause and next track work fine if I use JRiver instead of MinimServer.

Any ideas would be welcome
thanks