It looks like that the workingCopiesFromConfiguration gives a collection containing a nil val
I copied the collection in to a temp var so that I could debug (workingCopies)
When I do:
workingCopies select: [ :each | each isNil ]
--> an OrderedCollection(nil nil nil)
Uh Oh...
I've made some changes and got something that looked like "proper".
I saved it here.
My use case was:
Snapshotcello new
configurationClass: ConfigurationOfHOWebStack;
sourceVersion: #development;
targetVersion: '0.3-snapshot';
snapshot.
version .14
Awesome tool for sure.
Phil