Hi All I downloaded Pharo3, Opened it, first thing I did was go to configuration browser, select pier3 and click "install stable version" I then get 'Apparent loop in import expansion' I will look into the problem and see whats causing it, but my bigger issue is that you can't have failing installs by default. Users cannot be expected to know how to fiddle and try figure out how to fix everything when they simply want to install and use something. Stack below: MetacelloVersionConstructor(Object)>>error: MetacelloVersionConstructor>>collectAllVersionsFromVersionImportPragmasInto:using:satisfiedPragmas: MetacelloVersionConstructor>>calculate:project: MetacelloVersionConstructor>>on:project: in Block: [ :cache | ... MetacelloPharo30Platform(MetacelloPlatform)>>stackCacheFor:cacheClass:at:doing: in Block: [ :dict | ... MetacelloPharo30Platform(MetacelloPlatform)>>useStackCacheDuring:defaultDictionary: in Block: [ ^ aBlock value: dict ] BlockClosure>>on:do: MetacelloPharo30Platform(MetacelloPlatform)>>useStackCacheDuring:defaultDictionary: MetacelloPharo30Platform(MetacelloPlatform)>>stackCacheFor:cacheClass:at:doing: MetacelloPharo30Platform(MetacelloPlatform)>>stackCacheFor:at:doing: MetacelloVersionConstructor>>on:project: MetacelloVersionConstructor class>>on:project: ConfigurationOfSeaside3>>project MetacelloMCProjectSpec>>projectClassProject MetacelloMCProjectSpec>>version MetacelloMCProjectSpec(MetacelloProjectSpec)>>versionOrNil in Block: [ self version ] BlockClosure>>on:do: MetacelloMCProjectSpec(MetacelloProjectSpec)>>versionOrNil MetacelloMCProjectSpec>>compareCurrentVersion:targetVersionStatus:using: MetacelloMCVersionSpecLoader>>load in Block: [ :pkg | ... Array(SequenceableCollection)>>do: MetacelloMCVersionSpecLoader>>load MetacelloMCVersion>>executeLoadFromArray: MetacelloMCVersion>>fetchRequiredFromArray: in Block: [ :dict | ^ self executeLoadFromArray: anArray ] MetacelloPharo30Platform(MetacelloPlatform)>>useStackCacheDuring:defaultDictionary: in Block: [ ^ aBlock value: dict ] BlockClosure>>on:do: MetacelloPharo30Platform(MetacelloPlatform)>>useStackCacheDuring:defaultDictionary: MetacelloMCVersion>>fetchRequiredFromArray: in Block: [ ... BlockClosure>>ensure: MetacelloMCVersion>>fetchRequiredFromArray: in Block: [ ... Kind Regards -- Gareth Cox IT Manager/Developer Inspired Org (PTY) Ltd email: gareth(a)inspired.org <mailto:gareth@inspired.org> tell: +27 (0)21 531 5404 cell: +27 (0)78 374 9035