Attribute: 'dateformat' is not supported

We are upgrading from 2.0.2 to 2.1.4 clearly there have been many
changes.
I would like to know how to resolve this error:

Attribute: 'dateformat' is not supported for class:
'net.sourceforge.cruisecontrol.ModificationSet'.

I run ./cruisecontrol.sh -projectname V1 -lastbuild 20030101000000
-configfile daily-config.xml

And get the error above.  Here is page of daily-config.xml
  <!-- Set the quiet period here -->
    <modificationset quietperiod="10" dateformat="yyyy-MMM-dd HH:mm:ss">
            <cvs cvsroot=":pserver:cvs@source:/usr/local/cvs" />
    </modificationset>

Where can I find some information on resolving this issue?

Thanks,
James


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