I have some problems with adding my new product into a site. When I want to add my product in my test-folder, it's no problem. But when I want to add my product in a website, it isn't shown in the Add a Product list. I think it is a problem with the Zope-permissions, but I have looked in several source code and have made it just the same. This is my __init__.py file: import FormMail def initialize(context): try: context.registerClass( instance_class=FormMail.FormMail, permission='Add MailFormulier', constructors = ( FormMail.FormMail_Add, FormMail.manage_FormMail_Add, ), ) except: import sys, traceback, string type, val, tb = sys.exc_info() sys.stderr.write(string.join(traceback.format_exception(type, val, tb), '')) del type, val, tb And this are my __ac_permissions: __ac_permissions__=( ('View management screens', ('manage_main',)), ('Change permissions', ('manage_access',), ('Owner', 'Manager')), ('Change MailFormulier', ('manage_edit',''), ('Owner', 'Manager')), ('View', ('index_html', 'view_form','manage_form'), ('Anonymous', 'Owner', 'Manager')), ) Can anyone help me solving my problem?