Hello, I was looking into that, the first (maybe only) reason is that the new class builder can not make anonymous subclasses of classes with ByteLayout
https://pharo.fogbugz.com/f/cases/12488/Can-not-create-newAnonymousSubclass-of-ByteLayout-classes On 16 Jan 2014, at 16:55, Torsten Bergmann <asta...@gmx.de> wrote: > When loading PunQLite [1] in recent Pharo3.0 Latest update: #30700 > I get an exception (IncompatibleLayoutConflict). > > It all boils down to the single expression: > > (NBExternalTypeValue ofType: 'NBInt64') > > from an initialize method which raises this. When I try in Pharo3.0 Latest > update: #30579 it works. > > How can this be fixed? Is there something missing from the latest NB > integration? > > Thx > T. > > > [1] http://smalltalkhub.com/#!/~MasashiUmezawa/PunQLite >