Multiple music streams in different rooms - last room turning itself off

[jfh]

I have a macro that plays a BluRay (2 rooms), a playlist (4 rooms) and a stream (6 rooms).  Been working fine until now.  The last invocation each session dropped the last room.  If I go into sessions and add the dropped room back, it drops again.  I’m stumped.

 

(Example - BluRay plays in Living Room and I join the Theater.  A few seconds later the Theater drops.)

 

Where do I start?