[Pharo-project] Trying SimpleMorph crashes

I have installed SimpleMorphic from a file browser into Pharo1.2a @12241 but when I try something like: x := SMxStarMorph new openInHand the system hangs with a eventual crash-out saying: ***System error handling failed*** Original error: Error: MessageNotUnderstood: SMxStarMorph>>ownerChanged. Debugger error: MessageNotUnderstood: SMxStarMorph>>wantsToBeCachedByHand: MorphicUIManager>>onPrimitiveError: ...... etc. There are similar problems when trying this in the one-click Pharo image.