'From Squeak3.1alpha [latest update: #''Squeak3.1alpha'' of 28 February 2001 update 3904] on 19 April 2001 at 3:41:15 pm'! | existing | existing _ ChangeSorter allChangeSetNames. existing _ existing collect: [:cngSet | cngSet copyReplaceAll: '/' with: '_']. existing _ existing collect: [:each | each initialIntegerOrNil]. (existing select: [:each | each notNil]) asSet do: [:each | SystemVersion current registerUpdate: each].! self inform: 'Squeak needs to stop fetching updates for a moment. (The previous update modified the update mechanism itself.) Please dismiss the following Halt window, and ask for updates again.'! self halt: 'Please dismiss this window.'.!