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TR: How to Run

If macOS refuses to run the TR app, do this:
  1. Click the Apple  Menu.
  2. Click System Preferences…
  3. Click Security & Privacy.
  4. Click General.
  5. Click the lock to make changes and enter your password.
  6. Click the Unlock button.
  7. Set "Allow apps downloaded from" to "App Store and identified developers."
  8. Right-click the TR.app.
  9. Click Open.

If it still fails, do this:
  1. Click the Apple  Menu.
  2. Click System Preferences…
  3. Click Security & Privacy.
  4. Click General.
  5. Click Open Anyway. (This button will be available for about an hour after you try to open the app.)