Created attachment 177319 [details] Screenshot The list of categories under "Application Addons" contains names that aren't nice. They sometimes contain weird underscores or dashes (e.g. Cator_octave or Parley-themes). It should be something like "Cantor (Octave)" or "Parley Themes". Other names are incorrectly capitalized, e.g. Krunner or Kturtle
They are indeed.
Cantor's knsrc files need to specify a Name field for human reading, what you are seeing is discover trying to auto construct a name in absence of the Name field.