macOS "MIST is damaged" fix
When trying to run MIST on macOS for the first time, you may get the following message:
"MIST" is damaged and can't be opened. You should move it to the Trash.
Good news! MIST is [probably] just fine, but macOS can be rather persnickety about apps that didn't come directly from the App Store.
Here's what to do to fix it.
1) Open the Terminal App (Spotlight Search > 'Terminal')
2) Enter the following:
sudo xattr -cr /Applications/MIST.app
(The -c flag removes all attributes and -r applies recursively for the entire MIST.app directory.)
3) Press Enter, input your password when prompted, and press Enter again
4) Run MIST again and you should be all set!
If this doesn't work for you, you can get help.