Screen sharing is off.
Two different DACs plugged directly into Mac mini with their own USB cable.
Network and firewall are not part of this equation. See point above.
Storage issue is unlikely as all my content is connected via thunderbolt to Mac mini. See my comments earlier regarding hidef video.
Cables - highly doubtful that I have 2 USB cables from 2 different vendors go bad at the same exact time
I may have missed it. How do I transfer license to the MacBook Pro to redo it as my core?
Thanks for keep plugging away at this. I appreciate the help.