I found that you've added NewsFox to the KM 75b3 but no one of updates hasn't added the needed pref so the RSS-reader is 'hidden' in menu and inactive in Addons Manager.
Please add line
and don't hide tasty things from your fans!
I'll add kmeleon in the rdf
I see that 'restart' command of Addons Manager works fine for K-Meleon.
I'll add appRestart command, but it's not working fine, it kills all download in progress.
Are you writing documentation now?
I'm updating the MacroLanguage2 page