Delete Bone Crash

[xian]

I have a file with a Pirate character. There are eight views of him as switch layers. I have boned all of his arms, but am replacing his left hand with different accessories (hook, spoon, spigot). When replacing the hand that was there, I no longer required a hand bone, simply attaching the switch layer to the lower arm bone.

When I delete the hand bone, MOHO crashes. Not every time, but maybe every other time.

I am using a G4 PBook OS10.3.9
MOHO demo 5.2.1

and I promise to buy soon.