First off, in VW define ClassDescription & UndefinedObject class
#methodsFor:stamp as '^ self methodsFor: arg'.  The stamp is not
useable in VW.

But then, you may have problems with other things, apparently the
hyperlinks in the comments and source code.  These require removal
by hand, but it is quite possible that other Squeakers are aware
of easy ways to prevent these from showing up in the sources, or
perhaps in generating a VW-compatible chunk-style fileout format.

les