My MacBook Pro updated to:
...but now, Arduino fails to load and run:
Is this an issue with my settings? ...help needed.
Thank you,
Greg
...I finally found this:
Catalina requires all apps that are signed with developer IDs to be 'notarized' by Apple. In the absence of an updated version from the developer, you can try the following:
Right-click and select "Open". This may bring up the same dialog, but with an option to Open the file anyway.
You can get round this by removing the quarantine Extended Attribute on the file:
xattr -d com.apple.quarantine /path/to/file
Naturally, this bypasses Apple's security precautions which exist to stop maliciously altered software from running.