Hi all,

The recent batch of updates renamed the #isMetaClass method in 
PseudoClass to #isMeta.  Older versions of Monticello use #isMetaClass, 
so if you have an image with Monticello already loaded, when you update 
it will stop being able to load packages (including not being able to 
upgrade to the most recent release of MC, which uses #isMeta instead).

If you run into this problem, the simple workaround is just to 
temporarily implement

PseudoClass>>isMetaClass
   ^ self isMeta

Avi