Chris Muller uploaded a new version of ReleaseBuilder to project The Trunk:
http://source.squeak.org/trunk/ReleaseBuilder-cmm.73.mcz

==================== Summary ====================

Name: ReleaseBuilder-cmm.73
Author: cmm
Time: 22 December 2011, 1:47:42.618 pm
UUID: cf876ee9-97cc-4a2f-99bf-02d2c6955424
Ancestors: ReleaseBuilder-chc.72

- Don't attempt to resize screen until we're using the correct primitives to do so!
- Revert standard size to 800x600.

=============== Diff against ReleaseBuilder-chc.72 ===============

Item was changed:
  ----- Method: ReleaseBuilderTrunk class>>prepareNewBuild (in category 'scripts') -----
  prepareNewBuild
  	"ReleaseBuilderTrunk prepareNewBuild"
  	"Prepare everything that should be done for a new image build"
  	SystemVersion setVersion.
  	SMLoaderPlus
  		setDefaultFilters: (OrderedCollection with: #filterSafelyAvailable).
+ 	self setDisplayExtent: 800 @ 600;
- 	self setDisplayExtent: 1024 @ 768;
  		 setPreferences;
  		 switchTo43Repository;
  		 openWelcomeWorkspaces.
  	"Make DependencyBrowser accessible on the open menu."
  	DependencyBrowser initialize.
  	Smalltalk cleanUp: true.
  	Undeclared removeUnreferencedKeys.
  	Smalltalk garbageCollect!

Item was changed:
  ----- Method: ReleaseBuilderTrunk class>>setDisplayExtent: (in category 'private') -----
  setDisplayExtent: extent
+ "Uncomment next line when the primitives become available in the Squeak VM."
+ "	DisplayScreen hostWindowSize: extent."
+ 	Display extent = extent ifFalse: [ Warning signal: 'Display extent not set to ', extent ]!
- 	DisplayScreen
- 		depth: 32
- 		width: extent x
- 		height: extent y
- 		fullscreen: false.
- 	Display extent = extent ifFalse: [ Warning signal: 'Display extent not set to 800 at 600.' ]!