P-touch Editor may crash if your Mac has custom fonts installed.

1. Disable custom fonts in the Font Book.

   Custom fonts are usually stored in the [User] folder in the Font Book. If necessary, you can enable them in the Font Book later.

2. Open P-touch Editor.
    
3. If you still cannot open P-touch Editor, go to the Font Book > [File] > [Restore Standard Fonts].
    
4. Your Mac will automatically back up the custom fonts, and then will restore the standard fonts. Restart P-touch Editor.

   For more information about restoring your custom fonts, see your Mac documentation.