Latest SDK from BarTender 2021 R8.
This is during Dispose. Code is as per the help: Engine.Dispose()
Used the wrapped btEngine object to open a few btw files.
Just before calling btEngine.Stop(), I called btEngine.Documents.CloseAll(1)
I get one of these messages per open document:
Exception thrown: 'System.NotImplementedException' in Seagull.BarTender.Print.dll
If I remove the CloseAll, I get the same messages when I call btEngine.Stop().
Doesn't seem to cause a problem otherwise - bartend.exe is still killed.