'From Squeak3.1alpha of 28 February 2001 [latest update: #4021] on 16 May 2001 at 12:43:13 am'! "Change Set: B3DBumper Date: 16 May 2001 Author: Andreas Raab Give people a chance to bail out before the next update."! "Postscript: Warn of major impending changes." (self confirm: 'The next update will fix a serious bug in the 3D engine. - - - WARNING: After applying this update all 3D stuff will come out completely black. The fixed bug requires a new VM which will be available shortly. If you need the 3D engine at this point and cannot wait until a new VM is released choose ''no'', close the resulting notifier and no harm will be done. - - - If you wish to press on, then cross your fingers, and choose ''yes''.') ifFalse: ["Prevent advancement of version number." Smalltalk changes name: 'updateBumper' , (Time millisecondClockValue \\ 99999) printString. self halt: 'You may close this window.']. !