Steve, the checkbox-backend script has been replaced with a backend script under /usr/share, so it should no longer appear in your PATH environment variable. This fixes part of the problem you reported.
You also proposed adding checkbox-gtk or checkbox-cli to the base checkbox package suggests line. This would be similar to the apport project which also has a base package and separate interface packages. I have committed that change which should appear in version 0.9.2 of Checkbox. Thanks!
Steve, the checkbox-backend script has been replaced with a backend script under /usr/share, so it should no longer appear in your PATH environment variable. This fixes part of the problem you reported.
You also proposed adding checkbox-gtk or checkbox-cli to the base checkbox package suggests line. This would be similar to the apport project which also has a base package and separate interface packages. I have committed that change which should appear in version 0.9.2 of Checkbox. Thanks!