Hello Pharoers, I have one halt in code, raising an exception but when I want to Debug it, I got Error: Unable to debug a running process in OTDebugger class: process: aProcess context: aContext errorWasInUIProcess: aBool | processNode contextNode | aProcess isSuspended ifFalse: [ self error: 'Unable to debug a running process.' ]. aProcess is a Process in OTToolset class>>debug:context:label:contents:fullView: My process with halt is otherwise a background SwazooConnenction process. What is the reason for that? Janko -- Janko Mivšek AIDA/Web Smalltalk Web Application Server http://www.aidaweb.si