Comment 13 for bug 1255469

I've been getting these errors too, and not just in trusty. The two files concerned are part of the app-install-data package, and that's where this bug belongs in my view. It seems they are generated for the Ubuntu Software Center from the application's .desktop files, which have been faulty for a while and remain unfixed (see associated upstream bug). These errors should become apparent during the conversion process, i.e. when building the app-install-data package, and not on the user's system where they cause nothing but confusion.

So my suggestion is to validate all generated .desktop files early on when building the app-install-data package and to throw out those that don't pass muster. This way, the original authors could be notfied about such problems but users wouldn't be need to be bothered.