oops replied to the wrong message. Meant to reply to the odd URL message with the USB hub message....
Yes, I think I ran the command. I am getting outside my skills here.
Is this correct?
Hi @tbc2. Please follow the instructions provided in this Arduino Help Center article to fix the problem:
Woohoo!!!
Rosetta worked.
Thank you everyone!
Appreciate the help and the sighs.
You are welcome. I'm glad it is working now.
Regards, Per
You forgot file before, but since you're good to go now so. 
file /Users/anon/Library/Arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/bin/avr-g++
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