ProppFrexx ONAIR User-Forum

You can use e.g. the 'On Disconnected' event in the Streaming Server settings, see picture.
You can also use that event to write a related log file...

I just analysed your logs...

a) your initial assumption/message ("...AssignNextTrackToPlayer (TrackCueOut) failed: AutomaticLoading=False...) can not be resolved, as it is by design and just an internal debug log output but NOT an issue or error. That log simply tells me that the next track is ...

Please send the full log to me - else I can not even validate, if that is a warning to ignore or a real issue in your setup.

No, not automatically.
The Multi-Region advert concept is different and is explained here: https://www.radio42.com/proppfrexx/forum/viewtopic.php?p=8553&hilit=Regional+advert#p8553

You might theoretically send a command to the slave yourself with an event in the related overlay - but you would ...

No, the license is per seat. You need to decide on which partition you want to use it.
Doesn’t make sense to constantly switch.

Fixed in v4.5.2.10

Those values represent the logical null value.
So this is all good.

But yes, you can also leave a field ‚empty‘ resp. an empty string, i.e. „;;“.

I don’t understand.

Sure, I'll take a look!

For EXEC_TAG_FILE and the pfrestrictions TAG you can use a semicolon (;) as a separator for the restrictions. I.e.:
EXEC_TAG_FILE Y:\Tools\assets\tinkering\moods.flac|title=Colour Spectrum|artist=Coldplay|genre=Pop;Rock|pfrestrictions=00:00:00;00:00:00;0;0;00010101;00010101;True;Hits;Alles;$0 ...