Thank you for this answer.
But I miss some other important information that may be indipendent of all this varieties in Hard and Software.
While it is safe to set everything to the Basic sample rate of 44/16 you point out as a measure for troubleshooting; do the Software packages involved in a given setting need to be set to the same driver?
To clarify: I refer to Band in a Box (in the background), The plugIn and a DAW. If there is ASIO available, doe all 3 need to be set not only to 44/16 but to ASIO as well.
If one of the does not support ASIO, do all 3 need to be set to, say, WAS?

Is it safe to set everything the same, sample rate and Audio driver?
Or is it not only the safe way to go, but absolutely necessary?

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Why do I even ask? just to give some background for those wondering.
I ask this, because as I mentioned in my post I had this "mismatch error", but was not able to find a setting that was available in all of the 3 Components.
I had this strange behaviour (still no answer if this is intended) that when selecting a style in the PlugIn a small window popped up which I could grab (if fast enough) an view the settings in bbw-64.exe. And the settings differed from the settings in the PlugIn, but could not be altered.


“Musicians”: UltraPak 2024
DAW: StudioOne Pro 6.5
"Instruments": VSTs and REs
Notation: Notion 6
Interface: NI Komplete Audio 6
Mic: RØDE NT1-A
Controller: Panorama P6/KAWAI VPC1/Atom
OS: Win 10 64 Pro