Below there is a line that reads "IV3 unboundThe following slots have :CLASS allocation:"
There should be a carriage return before the "The".
$ java -jar abcl.jar Armed Bear Common Lisp 0.19.0-dev Java 1.6.0_17 Apple Inc. Java HotSpot(TM) 64-Bit Server VM Low-level initialization completed in 0.374 seconds. Startup completed in 1.086 seconds. Type ":help" for a list of available commands. CL-USER(1): (defclass myclass () (iv1 iv2 iv3 (cv1 :allocation :class))) #<STANDARD-CLASS MYCLASS {5EE04FD}> CL-USER(2): (setq i1 (make-instance 'myclass)) #<MYCLASS {195B6AAD}> CL-USER(3): i1 #<MYCLASS {195B6AAD}> CL-USER(4): (describe i1) #<MYCLASS {195B6AAD}> is an instance of #<STANDARD-CLASS MYCLASS {5EE04FD}>. The following slots have :INSTANCE allocation: IV1 unbound IV2 unbound IV3 unboundThe following slots have :CLASS allocation: CV1 unbound CL-USER(5):