Hi!
GTInspector in Pharo 5 is not up to date. Loading Roassal does not load because of the example. You need the following incantation:
ConfigurationOfGTInspectorCore loadBleedingEdge. Gofer it smalltalkhubUser: 'ObjectProfile' project: 'Roassal2'; configurationOf: 'Roassal2'; loadDevelopment
Can GTInspector be updated in Pharo 5?
Alexandre