CJ> It opened, shows the first frame, but gave this crash message immediately after hitting Play. It played music for 5 seconds then stopped. I said No and it gave the 2nd error. DOM Player version 15.42.

That's a known bug in recent 2.15.x versions. Player 2.14.29 seems to be fine.

@Carl - all 2.14.29 apps open without the longish gatekeeper test - is this a result of notarization? Though I am still on Sierra, without notarization? All I get is the usual 'This app has been downloaded from the internet - do you still want to open it' warning. Then the app opens immediately. I just recently installed 2.14.26 and 2.15.42, and both showed the long gatekeeper check.

- Carsten