Hello zope users, I have this little problem with bound methods and __init__. I have written something like: class Root(Acquisition.Implicit, Persistent): def __init__(self): self.container = [] def register_func(self, func): self.container.append(func) class Spam(Acquisition.Implicit, Persistent): def foo(self): pass def __init__(self): # This fails at Root.register_func, in self.container.append self.register_func(self.foo) def add_bound_method(self): # Works like charm, when called explicitly self.register_func(self.foo) This results in UnpickleableError, 'Cannot pickle objects' when adding the product. Now if I call register_func from somewhere else than __init__ or manage_afterAdd, there is no problem, and everything works as I expect it to work. This is propably explained somewhere in deep detail, and I have managed to miss that documentation. Any pointers to documentation or ideas on how to set bound methods to other objects would be appreciated. Best regards, Bo Granlund