[Zope] zope sql_delimiter windows

I have a Zope application that runs perfectly on Linux. However, my target audience is likely to use Windows so I am trying to port my app. to that platform. Whenever I use a multiple insert Zsql method that includes sql_delimiter, python.exe crashes. eg. <dtml-in att> <dtml-var sql_delimiter> <dtml-if absent> insert into attendance (absent,timeperiod,studentid ) values ( <dtml-sqlvar absent type="string">, <dtml-sqlvar timeperiod type="string">, <dtml-sqlvar studentid type="int"> ) </dtml-if> </dtml-in> The above ZSQL method works on Linux any Zope version but causes the crash on Windows, Zope versions - 2.8, 2.9, 2.10 have been tested and all fail, is there an issue with this? Regards Garry