I’ve tried loading GToolkit into Pharo 4 from a configuration: spec for: #'pharo4.x' do: [ spec project: 'GToolkit' with: [ spec className: 'ConfigurationOfGToolkit'; version: #bleedingEdge; file: 'ConfigurationOfGToolkit'; repository: 'http://www.smalltalkhub.com/mc/Moose/GToolkit/main'; postLoadDoIt: #setUpIDE ] ]. I didn’t exactly expect it to work but I was hoping it would… :) Any ideas if / when that configuration will work (it doesn’t have to be perfect. I’m happy to work with #bleedingEdge). Cheers, Max