crwdns2934241:0crwdne2934241:0 Dan

crwdns2934249:0crwdne2934249:0:

Lets see if resetting the PRAM settings helps here. [https://support.apple.com/en-us/HT204063|Reset NVRAM or PRAM on your Mac].

Also what App are you using that calls for a CMD - 0 (zero) I only can think of CMD - O (letter) for open file at the OS level.

crwdns2915684:0crwdne2915684:0:

open