Trying the new 2.2.0b3 zope. One zclass using ty's calendar tag now breaks with an error message I just cannot figure out - Error Type: TypeError Error Value: unexpected keyword argument: linkDate Traceback (innermost last): File /usr/local/zope/zope22b3/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/zope/zope22b3/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/zope/zope22b3/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: CatalogAware) File /usr/local/zope/zope22b3/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/zope/zope22b3/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: updatePBLdates_calendar) File /usr/local/zope/zope22b3/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: updatePBLdates_calendar) File /usr/local/zope/zope22b3/lib/python/OFS/DTMLMethod.py, line 167, in __call__ (Object: updatePBLdates_calendar) File /usr/local/zope/zope22b3/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: updatePBLdates_calendar) File /usr/local/zope/zopeinstancehome/Products/Calendar/CalendarTag.py, line 277, in render File /usr/local/zope/zopeinstancehome/Products/Calendar/CalendarTag.py, line 313, in render_wm File /usr/local/zope/zopeinstancehome/Products/Calendar/CalendarTag.py, line 339, in render_day_ File /usr/local/zope/zope22b3/lib/python/DocumentTemplate/DT_Util.py, line 262, in namespace TypeError: (see above) I added __allow_access_to_unprotected_subobjects__=1 to the CalendarTag class just in case. The offending line in CalendarTag.py is ns = namespace(self, date = date, mode = self.mode, firstday = firstday, setCalendar = self.setCalendar_, getCalendar = self.getCalendar_, linkDate = self.linkDate_ )[0] namespace in DT_Util seems harmless enough - def namespace(self, **kw): """Create a tuple consisting of a single instance whos attributes are provided as keyword arguments.""" return apply(self, (), kw) Anyone ??