Hi. With the pharo dev 1.2 from here: https://pharo-ic.lille.inria.fr/hudson/job/Pharo%201.2/lastSuccessfulBuild/artifact/Pharo-1.2.zip
if I open a RecentMessages and click over one of the classes, I get the MessageNotUnderstood: PluggableTextMorph>>stylerStyled:
I attach PharoDebug.log
Cheers
mariano
<PharoDebug copy.log>