[Zope-dev] Calendar tag 0.9.6 breaks with 2.2.0b3??

[Dr. Ross Lazarus]

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 ??