Installing stable Roassal2 from the Catalog Browser, in Pharo 5 (#50509), leads to a vanish dialog :
Information There was an error while trying to install Roassal2. Installation was cancelled.
and to the following message in Transcript:
Loading 1.20 of ConfigurationOfRoassal2... ... Loaded -> ConfigurationOfGlamour-AndreiChis.217 --- http://smalltalkhub.com/mc/Moose/Glamour/main/ --- http://smalltalkhub.com/mc/Moose/Glamour/main/Error: Unable to resolve project package for 'GlamourCore'. It is likely that that the configuration referencing this project will not validate properly (see MetacelloToolBox class>>validateConfiguration:).