When installing NotePad 2012 on macOS 10.12 (Sierra), in some cases it is may not be enough to simply adjust your Gatekeeper settings. Instead, please try this specific workaround:
- Open the file NotePad2012Mac.dmg, which can be downloaded here.
- CONTROL-click the file Install FinaleNotePad.app and choose Show Package Contents. A new Finder window opens.
- Double-click the Contents folder.
- CONTROL-click the file InstallProduct.mpkg and choose Open. The following message appears:
- Click Open. The NotePad installer appears.
- Continue with the on-screen prompts to complete the installation.
- Restart your computer when finished installing.