[Pharo-project] Inspect fails - Pharo 1.4 / OSX 10.7.3

Hi, When I try and inspect some FFI code in Pharo 1.4 on OSX 10.7.3, it fails and gets stuck in a loop doing this: MessageNotUnderstood: receiver of "addLast:" is nil UndefinedObj ect(Object)>>doesNotUnderstand: #addLast: Decompiler>>jump:if: Decompiler(InstructionStream)>>interpretNextInstructionFor: Decompiler>>interpretNextInstructionFor: Decompiler>>statementsTo: Decompiler>>blockTo: Decompiler>>doClosureCopyCopiedValues:numArgs:blockSize: Decompiler>>pushClosureCopyNumCopiedValues:numArgs:blockSize: Decompiler(InstructionStream)>>interpretExtension:in:for: Decompiler(InstructionStream)>>interpretNextInstructionFor: Any ideas ? Thanks