macOS Monterey 12.0.1 Problems

Installed 12.0.1 and Arduino 1.8.16 stoped working. It would get part way through launch when it disappeared. It would not get far enough to generate a report that I could send to Apple. (MacBook Pro with Intel processor.)

Going back to Big Sur was a major effort so I broke out an eight year old machine to do my work.

Hi I'm sorry to hear about the trouble with the macOS update. In order to gather more information that might help us to troubleshoot your problem, I'm going to ask you to run the Arduino IDE from the command line, then share the output.

Please do this:

  1. Open your Applications folder.
  2. Open Utilities.
  3. Double-click on "Terminal".
  4. Type open Arduino
  5. Press Enter
  6. Wait for the Arduino IDE to finish starting, or failing to start. If it starts, attempt to open a sketch, or whatever action it is that causes the failure.
  7. Switch back to the terminal window if the Arduino IDE window took the focus.
  8. Press Cmd+A. This will select all the text in the terminal window.
  9. Press Cmd+C. This will copy the selected text to the clipboard.
  10. Open a forum reply here by clicking the Reply button.
  11. Click the </> icon on the post composer toolbar. This will add the forum's code block markup (```) to your reply to make sure the output is correctly formatted.
    Code block
  12. Press Ctrl+V. This will paste the output into the code block.
  13. Move the cursor outside of the code block markup before you add any additional text to your reply.
  14. Click the Reply button to post the output.

By total serendipity everything seems to be working.

I do not recommend this to anybody but maybe to somebody with more knowledge they may gain some understanding.

From the Apple support site I found and option to reinstall the OS that originally came with the computer.

It started by saying, “Turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.” Then there were some options to follow.

This ground away for about fifteen minutes but did not work. There was some sort of cryptic error message that ended in 2100F. I tried a second time and got the same result.

At that point I abandoned work on my current computer and dug out an old computer. After I got the old computer working and down loaded my code from iCloud I posted my problem on the board.

I saw your response and welcomed the opportunity to help. I launched terminal and started following the instructions. However, I miss read about opening Arduino through terminal and double clicked on the Arduino icon in the dock. To my total surprise it launched normally and functioned normally.

Terminal was new to me. To satisfy my curiosity I did type “open Arduino” and got this message:

“The file /Users/my-name/Arduino does not exist.
my-name-MacBook-Pro-2:~ my-name$” (I am substituting “my-name” for my real name here.)

What the failed Command (⌘)-R attempts, or something else I did, accomplished is beyond me. But I am functional again.