Hello. I thought I'd share my experience with installation of the elicenser control center. I moved the key to a new Mac, downloaded the most recent version & when I tried to run the installer I got the error message "lcc2 connection to protection device lost". To make a LONG story short, the solution was to:
1) Remove e-license dongle
2) uninstall e-license control center
3) Restart computer
4) Reinstall e-license control center
5) THEN re-insert dongle as the install proceeds
This worked for me, I hope it works for you if you get the same error.