CERROR, and the ubiquitous "Unclaimed Message" error

[JONL at MIT-MC (Jon L White)]

How often do you get in to a loop trying to print out the
object which didn't claim a message?  infinitely often, for
often an object which doesn't claim some random <foo> msg
will also fail to claim the PRINT msg.  So for now, I'm making
it just print the address of the offender.  If the loser wants,
he can just MUNKAM that address.