gresistor3-3.2.5-alt2.noarch	freedesktop-categories	fail	Main Categories consist of those categories that every conforming desktop environment MUST support.(http://standards.freedesktop.org/menu-spec/latest/apa.html). None found in /usr/share/applications/eu.stethewwolf.gresistor.desktop. please, fix.; 
gresistor3-3.2.5-alt2.noarch	freedesktop-desktop	info	desktop-file-validate utility printed the following message(s): /usr/share/applications/eu.stethewwolf.gresistor.desktop: hint: value "Electronics;" for key "Categories" in group "Desktop Entry" does not contain a registered main category; application might only show up in a "catch-all" section of the application menu;