I'm getting the message shown in the attachment when I try to load MB in both ETO and Pat's BoB.
I have verified the paths.
I have reloaded the mission builder into the vanilla cfs3 and copied it over, and created new shortcuts.
I have started pulling out what hair I have remaining; before I do any more of that, has anyone been in this ridiculous situation and gotten it to work without a complete reinstall?
MAW, Rising Sun, and Korean Skies all work as they should.