There is a bug in becomeForward on 64 bit images that results in a VM crash if, for example, one attempts to load VMMaker. The bug report and the fix are on Mantis: http://bugs.impara.de/view.php?id=5401
This was just a small editing oversight, but the bug has been present since the original dist3 release. I'm happy to report that it is now possible to load the latest VMMaker into a 64 bit image.
I think this patch would be a good candidate to include in the next VMMaker release ;-)
Dave
vm-dev@lists.squeakfoundation.org