I succeeded using zopeXMLMethods up to zope 2.7.8 after adapting its __init__.py (see http://mail.zope.org/pipermail/zope/2005-February/156670.html by Anton Stonor), which was necessary starting with zope 2.7.3. Trying to use this very same zopeXMLMethods product (that is with adapted __ini__.py) in zope 2.8.4, however, resulted in exactly the same error I got with the original __init__.py in zope 2.7.8 (traceback below)??? Does anybody have a solution? cb Trying to add a xsltmethod in the zmi brings the authentication dialog up and results in an unauthorized error: Traceback (innermost last): Module ZPublisher.Publish, line 113, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 40, in call_object Module Shared.DC.Scripts.Bindings, line 311, in __call__ Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec Module Products.PageTemplates.PageTemplateFile, line 110, in _exec Module Products.PageTemplates.PageTemplate, line 104, in pt_render - <PageTemplateFile at /qp/create> Module TAL.TALInterpreter, line 206, in __call__ Module TAL.TALInterpreter, line 250, in interpret Module TAL.TALInterpreter, line 651, in do_loop_tal Module Products.PageTemplates.TALES, line 206, in setRepeat Module Products.PageTemplates.TALES, line 221, in evaluate - URL: create - Line 70, Column 6 - Expression: standard:'here/availableProcessors' - Names: {'container': <App.ProductContext.__FactoryDispatcher__ object at 0x036A7E90>, 'context': <App.ProductContext.__FactoryDispatcher__ object at 0x036A7E90>, 'default': <Products.PageTemplates.TALES.Default instance at 0x02B8ABE8>, 'here': <App.ProductContext.__FactoryDispatcher__ object at 0x036A7E90>, 'loop': <Products.PageTemplates.TALES.SafeMapping object at 0x03710918>, 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x02B78E18>, 'nothing': None, 'options': {'args': ()}, 'repeat': <Products.PageTemplates.TALES.SafeMapping object at 0x03710918>, 'request': <HTTPRequest, URL=http://localhost:8080/qp/manage_addProduct/ZopeXMLMethods/create>, 'root': <Application at >, 'template': <PageTemplateFile at /qp/create>, 'traverse_subpath': [], 'user': admin} Module Products.PageTemplates.Expressions, line 185, in __call__ Module Products.PageTemplates.Expressions, line 173, in _eval Module Products.PageTemplates.Expressions, line 127, in _eval - __traceback_info__: here Module Products.PageTemplates.Expressions, line 301, in restrictedTraverse - __traceback_info__: {'path': ['availableProcessors'], 'TraversalRequestNameStack': []} Unauthorized: You are not allowed to access 'availableProcessors' in this context