TWM works in 3.0 after some work on icons and updating menus. Gofer new smalltalkhubUser: 'LaurentLaffont' project: 'TilingWindowManager'; configuration; load. ((Smalltalk at:#ConfigurationOfTilingWindowManager) project version: '3.0') load You can also use ((Smalltalk at:#ConfigurationOfTilingWindowManager) project version: #development) load but this will for sure change over time. There is the World management icon which is still there and it looks like it can create worlds but switching between them just breaks havoc. Maybe should we just remove that feature from TWM as 3.0 doesn't seem to be multiworld friendly. Nothing done on tests nor themeing (which appears to be not that working well in 3.0 either due to theming changes); At least the thing is back :-) [I missed it...] Phil