Elliot, This sounds similar to something that was happening in OB(??) a while back. IIRC, looking for implementors of offending method made it reasonably clear whether it was expected to answer true or false and then I simply added that to the obvious receiver and it worked. Look for the debug log in your image directory. Bill ________________________________________ From: pharo-project-bounces@lists.gforge.inria.fr [pharo-project-bounces@lists.gforge.inria.fr] On Behalf Of Elliot Finley [efinley.lists@gmail.com] Sent: Sunday, December 26, 2010 6:45 PM To: pharo-project; Seaside - general discussion Subject: [Pharo-project] can't edit any methods I'm working on a project that I started in the Seaside-3.0-One-Click image (Mac OSX). When Seaside 3.0.2 was released, I moved my project to a new 3.0.2 one-click image. No problems. When Seaside 3.0.3 was released, I moved my project to a new 3.0.3 one-click image. Now I can't edit anything. When I try, I get: NonBooleanReceiver: proceed for truth. (how do I copy-n-paste the stack dump?) moving my project = saving to FTP site via monticello and loading it into the new one-click image and loading the auto-test package. Any ideas? Thanks in advance, Elliot