Something weird is going on, because I can't find the button to open MJ anywhere... I have the toolbar mod installed, may that be the cause? No, MJ buttons are not on the toolbar, or on it's list either.
So, I made perfect orbit around Duna, and I wanted MEchJeb to land inside the crater... This is what MehJeb calls "landing approach" Maybe it tried to land on... I dunno... Dres maybe? Unfortunately, MJ loves to mess up orbits. At least my orbits.