hello, can anybody tell me what this error is ? i am craeting a zclass and adding an instances via dtml.... ********************** Zope Error Zope has encountered an error while publishing this resource. Error Type: AttributeError Error Value: _u Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. Traceback (innermost last): File C:\Programme\zope201\lib\python\ZPublisher\Publish.py, line 214, in publish_module File C:\Programme\zope201\lib\python\ZPublisher\Publish.py, line 179, in publish File C:\Programme\zope201\lib\python\Zope\__init__.py, line 201, in zpublisher_exception_hook (Object: ElementWithAttributes) File C:\Programme\zope201\lib\python\ZPublisher\Publish.py, line 165, in publish File C:\Programme\zope201\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: Add_instance_html) File C:\Programme\zope201\lib\python\ZPublisher\Publish.py, line 102, in call_object (Object: Add_instance_html) File C:\Programme\zope201\lib\python\OFS\DTMLMethod.py, line 145, in __call__ (Object: Add_instance_html) File C:\Programme\zope201\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: Add_instance_html) File C:\Programme\zope201\lib\python\DocumentTemplate\DT_With.py, line 148, in render (Object: manage_addProduct['Distribution']) File C:\Programme\zope201\lib\python\DocumentTemplate\DT_Util.py, line 321, in eval (Object: BOOKCLASS_add(_.None,_, NoRedir=1)) File <string>, line 0, in ? File C:\Programme\zope201\lib\python\OFS\DTMLMethod.py, line 141, in __call__ (Object: BOOKCLASS_add) File C:\Programme\zope201\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: BOOKCLASS_add) File C:\Programme\zope201\lib\python\App\FactoryDispatcher.py, line 126, in DestinationURL AttributeError: (see above) ********************************* thank you regards nico