Rats, that's not the fix.

Even though #cleanUpForRelease ran to completion, running the code:

� � � �Smalltalk
� � � � � � � �allClassesAndTraitsDo: [ :class |
� � � � � � � � � � � �[ :each |
� � � � � � � � � � � � � � � �each
� � � � � � � � � � � � � � � � � � � �removeEmptyCategories;
� � � � � � � � � � � � � � � � � � � �sortCategories ]
� � � � � � � � � � � � � � � � � � � � � � � �value: class organization;
� � � � � � � � � � � � � � � � � � � � � � � �value: class class organization ].

still gives a ByteSymbol DNU for #run:with:in:

I give up for now.