Could not print graphs of sales

Used software: Downloaded the trunk on 06-01-2009 at 22:00.

When I go tho sales management -> Reporting -> All months -> Graphs and double click on the three reports to be printed I got three times the same error:

Traceback (most recent call last):
  File "/home/eddy/ERP/OpenERP-trunk/server/bin/netsvc.py", line 223, in dispatch
    result = LocalService(service_name)(method, *params)
  File "/home/eddy/ERP/OpenERP-trunk/server/bin/netsvc.py", line 74, in __call__
    return getattr(self, method)(*params)
  File "/home/eddy/ERP/OpenERP-trunk/server/bin/service/web_services.py", line 575, in report_get
    return self._check_report(report_id)
  File "/home/eddy/ERP/OpenERP-trunk/server/bin/service/web_services.py", line 551, in _check_report
    raise result['exception']
  File "<string>", line 1
    obj.Date Ordered
                   ^
SyntaxError: unexpected EOF while parsing