Keith Hodges wrote:
> I am attempting to unload things from the image.
>
> SystemNavigation allObjectDo:
>
> gets upset, when one of its objects turns out to be an instance of
> ProtoObject subclass: MessageCatcher.
>
> does anyone have any idea how this might come about?
>
> I am performing  " Installer unload: 'Universes'.  " in 3.10
>
> Keith
I understand it now ProtoObject doesnt understand #isBehavior and this
will break if there are any subclasses of ProtoObject in the entire image

Keith