In pharo2.0 you can click on it and it opens a debugger. Stef
On Nov 4, 2012, at 6:04 PM, laurent laffont wrote: > Hi, > > sometimes I have a PluggableListMorph that displays a big red square (see > attached screenshot). How can I debug why this happens ? > > <image.png> > > Cheers, > > Laurent
