1) when I first invoke A:M Painter from A:M the paint app will run and appear but not show the model. The model and its decal have been saved already.
If I wait several minutes it might show, but usually not. I have to "Return to A:M". A:M will be frozen for several more minutes until the small report box from A:M Painter appears and I click the quit button. Then I regain control of A:M
If I invoke A:M a second time, things are faster like I would expect. But how do I avoid that first 5-minute round trip to use A:M Painter?
Update: Filip has told me that both A:M and 3DPaint need "internet access" to communicate with each other. My firewall was blocking that; when I unblocked them the transfer worked much faster.
2) how do I get "Projection" paint to not paint all the way thru an object? Regular paint paints just on the visible front surface, which is what i would expect, but Projection paint paints thru to any other patches behind the front surface that I'm looking at.
Update: solution below