This is what I got when making a doIt on ŒTeapotMorph startFullScreen¹
10 November 2002 2:17:35 pm
Error: Error: Bad BitBlt arg (Fraction?); proceed to convert.

VM: Mac OS - Squeak3.2gamma of 15 January 2002 [latest update: #4913] Squeak VM 3.2.8b9
Image: TeaSqueak3.2 [latest update: #276]

BitBlt(Object)>>error:
[] in WorldState>>displayWorldSafely:
[] in BlockContext>>ifError:
Error(Exception)>>handlerAction
Error(Exception)>>signal
Error(Exception)>>signal:
BitBlt(Object)>>error:
BitBlt>>copyBits
[] in TWindowMorph(TeaBackingMorph)>>repairDamage
Array(SequenceableCollection)>>do:
TWindowMorph(TeaBackingMorph)>>repairDamage
TWindowMorph(TeaBackingMorph)>>glRenderOn:
[] in TeapotMorph>>glRenderSubmorphsOn:
Array(SequenceableCollection)>>reverseDo:
TeapotMorph>>glRenderSubmorphsOn:
TeapotMorph>>glRenderMorphicOverlayOn:
TeapotMorph>>glRenderOn:
TeapotMorph>>renderOn:
TeapotMorph>>drawAcceleratedOn:
TeapotMorph>>drawOn:
FormCanvas(Canvas)>>draw:
FormCanvas(Canvas)>>drawMorph:
[] in TeapotMorph(Morph)>>fullDrawOn:
FormCanvas>>roundCornersOf:in:during:
FormCanvas(Canvas)>>roundCornersOf:during:
TeapotMorph(Morph)>>fullDrawOn:
FormCanvas(Canvas)>>fullDraw:
FormCanvas(Canvas)>>fullDrawMorph:
[] in WorldState>>drawWorld:submorphs:invalidAreasOn:
Rectangle>>allAreasOutsideList:startingAt:do:
Rectangle>>allAreasOutsideList:do:
[] in WorldState>>drawWorld:submorphs:invalidAreasOn:
Array(SequenceableCollection)>>do:
WorldState>>drawWorld:submorphs:invalidAreasOn:
[] in WorldState>>displayWorld:submorphs:
FormCanvas>>roundCornersOf:in:during:
FormCanvas(Canvas)>>roundCornersOf:during:
WorldState>>displayWorld:submorphs:
PasteUpMorph>>privateOuterDisplayWorld
PasteUpMorph>>displayWorld
[] in WorldState>>displayWorldSafely:
BlockContext>>on:do:
BlockContext>>ifError:
WorldState>>displayWorldSafely:
WorldState>>doOneCycleNowFor:
WorldState>>doOneCycleFor:
PasteUpMorph>>doOneCycle
FillInTheBlankMorph>>getUserResponse
FillInTheBlankMorph
class>>request:initialAnswer:centerAt:inWorld:onCancelReturn:acceptOnCR:answerExtent:
FillInTheBlankMorph class>>request:initialAnswer:centerAt:inWorld:onCancelReturn:acceptOnCR:
FillInTheBlankMorph class>>request:initialAnswer:centerAt:inWorld:onCancelReturn:
FillInTheBlankMorph class>>request:initialAnswer:centerAt:inWorld:
FillInTheBlankMorph class>>request:initialAnswer:centerAt:
FillInTheBlank class>>request:initialAnswer:centerAt:
FillInTheBlank class>>request:initialAnswer:
TeapotMorph>>requestInitialSpace
[] in TeapotMorph class>>startFullScreen
WorldState>>runStepMethodsIn:
PasteUpMorph>>runStepMethods
WorldState>>doOneCycleNowFor:
WorldState>>doOneCycleFor:
PasteUpMorph>>doOneCycle
[] in Project class>>spawnNewProcess
[] in BlockContext>>newProcess