Comment #12 on issue 1970 by marianopeck: ProtoObject does not define #instVarNamed:, causes problem when using Inspector & SFuture
http://code.google.com/p/pharo/issues/detail?id=1970
I have the same problem with ProtoObject does not define #instVarNamed:when I have a class subclass from Object, with an instVar, and then I needed to change it to ProtoObject...then it complains the ClassBuilder because of that :(
