I do not understand why photoFXLab can not call Studio as a plugin. I have tried, but I keep getting the error message:
Background Layers cannot be used. Please create a duplicate layer.
This is in spite of the fact that there does exist a duplicate layer and neither layer is specified as a background layer. I know people will ask why I want to do something like that, but the reason is really very simple. Affinity Photo, my main photo editor, can not call Studio but can call photoFXLab. If I could get photoFXLab to call Studio I would have solved one of my main processing problems. Hence this question.