Had an odd problem when I downloaded Minefield19. The extension appeared to install correctly and the application started from the icon. But after I rebooted clicking the icon didn't start the app. Per the apps browser there were no missing dependencies.
Deleted Minefield19 and downloaded Minefield18, which works fine. Will probably stick with this since it does everything I need.
Could just be a glitch on my box but if anyone else has this problem there may be something that needs fixing.
edit: Minefield19 Depends panel in apps browser is empty. So of course if there was a missing dependency it wouldn't show up. Tried a couple of different mirrors with the same result.