Hilaire,
You don't mention how you are loading Voyage. If I had the load expression and Transcript output from the load, I'd pretty much be able to tell pretty much what is going on.
I have a couple of theories about what could be going wrong, but without the load expression and Transcript output, I'd only be guessing and of course there is the possibility that you've discovered a bug in Metacello:)
If you'd like to get to the bottom of this, send me the load
expression and Transcript output and we'll go from there ...
Dale
Trying to understand this problem: >From my development image, I uninstalled all seaside, then I installed Voyage. This time it went fine AND Seaside-core *was not* installed during the process. What the heck is going on? When Seaside was present in my dev. image, installing Voyage make Seaside-core to be installed/upgraded (it was marked as dirty in Monticello, but no code change in fact) and it resulted in a broken Seaside installation?? Is it Metacello voodoo?