Since the latest patch the moons on my systems are no longer smashable? Did the requirements change, or do old systems no longer work?
You need to edit your systems. The planets now have a new option - halleys needed to be launched. You need to put a number there (any, so you can have 1 halley moons!). All your old moons are probably set to 0 = unlaunchable. You have to manually fix it.
