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 <astares@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
>