I am at a loss for words in response to your question, "did I even try to follow your instructions." In fact I followed exactly what you said to do but believed when all of sudden I was no longer on an Arduino site but on a safari site that it was not going to work, I sent my response anyway expecting a more complete set of instructions as to what to do after I copied the error messages to the clipboard. I apologize for not stopping my attempt and returning for additional instructions. I have read the rules for forum protocol and find your flip response insulting. I am a frustrated senior citizen because I know the problems stem from my lack of expertise in these areas. I spent many hours attempting to solve my problem but lack any background in this area.
I am sorry I bothered you.
PS Did you not know that unlike Windows,the Mac "tools" does not include Processor?