[Zope] calendarTag exception

[Darrell Gallion]

Trying to use the calendarTag and get this error.
I'm using the example code from
http://yyy.zope.org/Members/judell/CalendarTagExample
Before I redesign this thing, it seemed I must be doing something dumb.
I'm using this version Calendar-0.9.13.tar.tgz and Zope-2.2.0b1

--Darrell

Error Type: KeyError
Error Value: BASE1

Traceback (innermost last):
 ...
  File E:\zope\public\lib\python\DocumentTemplate\DT_String.py, line 504, in
__call__
    (Object: index_html)
  File E:\zope\public\lib\python\Products\Calendar\CalendarTag.py, line 227,
in render
  File E:\zope\public\lib\python\Products\Calendar\CalendarTag.py, line 346,
in render_dwm
  File E:\zope\public\lib\python\Products\Calendar\CalendarTag.py, line 374,
in render_day_
  File E:\zope\public\lib\python\DocumentTemplate\DT_Util.py, line 263, in
namespace
  File E:\zope\public\lib\python\Products\Calendar\CalendarTag.py, line 177,
in render
KeyError: (see above)