Can anybody see why I get the following error ? I try to subclass DemoPortalBase and PortalObjectBase into a class CMyPortalBase which I again subclass with a Zope ZClass. It all works fine until I add another class in the inheritance list of CMyPortalBase.When I try to call its __init__ method with the "self" argument if does not recognise this as the instance variable ? (I tries to print self, and it says that this is an instance of my ZClass). In other Python programs, calling Parent.__init__(self) works fine, but when running through Zope in this context Error Type: TypeError Error Value: unbound method must be called with class instance 1st argument class CMyPortalBase(TemplatePage.CTemplatePage,Portal.DemoPortalBase, PortalObject.PortalObjectBase): def __init__(self): TemplatePage.CTemplatePage.__init__(self) The CTemplatePage class is as follows : class CTemplatePage: standard_html_header = Globals.HTMLFile("StandardHeader", globals()) standard_html_footer = Globals.HTMLFile("StandardFooter", globals()) def __init__(self): print "In CTemplatePage" ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. Admin Orion System AS **********************************************************************