I tried to fix the extract method refactoring that seems broken when extracting class or variables. And I wanted to understand if I can get a debugger stack instead of this useless Syntax Error: window. Now I cannot find reference to SyntaxErrorDebugger. still putting a break point in buildMorphicViewOn: aSyntaxError "Answer an Morphic view on the given SyntaxError." | window | self halt. bring a debugger but with a cut stack .... open: aSyntaxError "Answer a standard system view whose model is an instance of me." <primitive: 19> "Simulation guard" | process | process := Processor activeProcess. UIManager default spawnNewProcessIfThisIsUI: process. UIManager default defer: [ self buildMorphicViewOn: aSyntaxError. ]. ^ process suspend so it does not really help to understand the syntax error. I do not get why this is so opaque. Stef -- Using Opera's mail client: http://www.opera.com/mail/