Updating Fire to build .2415 hangs on mounting .dmg

tnx

Oddly, I get

spctl -a /Users/Jeremy/Downloads/RemObjects\ Fire\ -\ 10.0.0.2419.dmg
/Users/Jeremy/Downloads/RemObjects Fire - 10.0.0.2419.dmg: rejected (the code is valid but does not seem to be an app)

but once it’s done, Fire does open it fine and restart. It doesn’t close the DMG, though it probably should.