Bug Report: VMix not initialized yet

[kubo6472]

About me

This bug report is posted on behalf of myself, a freelancer.

Observed Behavior

I tried setting up the demo
and I am stuck with playout-gateway docker container spitting:

{"message":"Device \"VMix vmix0\" (7011): VMix not initialized yet","level":"warn","localTimestamp":"2026-05-15T11:38:58.059Z"}

errors into the console, even though the URL of vMix is available and /api returns valid-looking XML. I tried to find the guide on how to setup CasparCG, but even though that one DOES get picked up as online and valid, I have no idea how to continue with getting any video files into it. The guide described for setting up the demo does not seem to be precise, and I have no idea if I have to downgrade, or at which versions of the different parts it plays all nicely together.

Expected Behavior

Pick up a working vMix, whose :8088/api can be curl-ed from the machine running Sofie.

Version

Sofie Core/PG: release 53; Rundown Editor: v2.7.5; CasparCG Server: release 2.5 (From PPA)

Severity / Impact

• P0: I am unable to validate Sofie as a solution, unless I get this working.

Level of Involvement

• I suppose this is just some missing part of the documentation, which I am willing to contribute to the right place, with some guidance.

[kubo6472]

Q: is Sofie 26.3.0 the same as release53, or are those different versions/trees?

[jesperstarkar]

A: To the latter question – they are the same. Versioning scheme was just changed.

[kubo6472]

I have since moved on from fighting with the non-working demo blueprints, over to my next hurtle:
This is how my "peripheral devices" look:

This is what I see as an issue:

Is there any way how to solve it?

//EDIT: Apparently, there is invalid XML in the blueprints, after editing them myself and rebuilding, I managed to get into a better state.

[kubo6472]

Shortcuts help looks like it is missing some keys to "Reset rundown" and "Deactivate"