number of allowable classes

[<BALL%YALEMED.BITNET@CUNYVM.CUNY.EDU>]

Is there a limit to the number of classes allowable in Rainy Day PCL?
I cannot seem to make an instance of class #1037 when Rainy Day PCL is
compiled under Allegro COMMON LISP 1.3.1. The class seems to be created
OK, but make-instance when called to make an instance of the class seems
to go into an infinite loop. Make-instance works fine on class #1036.

? (room)
There are at least 2443736 bytes of available RAM.

? *classes*
1036

? (defclass class1037 (standard-object)
   ())
#<Standard-Class CLASS1037 5100496>

? (make-instance (class-object 'class1037))
Aborted
?
 Any suggestions?

S. Ball