I don't know, could be something else. this is what i get in the debug lines of what goes haywire. update v-sensor values create the data hit UPDATE volt_sensors SET last_report=%s, last_value=%s, last_raw=%s WHERE volt_sensors.id = %s ( datetime.datetime(2007, 8, 7, 9, 32, 48, 125063), 13.17934, 899.0, 3116) INSERT INTO volt_sensors (date_time, raw, value, volt_sensor_id) VALUES (%s, %s, %s, %s) (datetime.datetime(2007, 8, 7, 9, 32, 48, 125426), 899.0 , 13.17934, 3116) Exception in thread Thread-5: Traceback (most recent call last):   File "threading.py", line 442, in __bootstrap     self.run()   File "/home/piv/forge/main/orbcomm_input_email.py", line 570, in run     self.process_flow_meter(monitor, raw)   File "/home/piv/forge/main/orbcomm_input_email.py", line 166, in process_flow_meter     FlowSensor.monitor == unicode(monitor)).one()   File "/usr/lib/python2.4/site-packages/storm- 0.9-py2.4.egg/storm/store.py", line 133, in find   File "/usr/lib/python2.4/site-packages/storm-0.9-py2.4.egg/storm/store.py", line 274, in flush   File "/usr/lib/python2.4/site-packages/storm-0.9-py2.4.egg /storm/store.py", line 313, in _flush_one   File "/usr/lib/python2.4/site-packages/storm-0.9-py2.4.egg/storm/database.py", line 136, in execute   File "/usr/lib/python2.4/site-packages/storm-0.9-py2.4.egg /storm/database.py", line 125, in _raw_execute   File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line 163, in execute     self.errorhandler(self, exc, value)   File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line 35, in defaulterrorhandler     raise errorclass, errorvalue OperationalError: (1054, "Unknown column 'date_time' in 'field list'") # update volt sensor print 'update v-sensor values' volt_sensor.last_raw = raw volt_sensor.last_value = value volt_sensor.last_report = datetime.datetime.now() print 'create the data hit' hit = VoltageHit(volt_sensor.id, raw, value) self.store.add(hit) and here are the two classes class VoltSensor(Storm):     __storm_table__ = "volt_sensors"     id = Int(primary=True, default = AutoReload)     adder, multiplier = Float(), Float()     last_value, last_raw, highest_value = Float(), Float(), Float()     monitor = Unicode()     last_report = DateTime()     #voltage_hits = ReferenceSet(id, "VoltageHit.volt_sensor_id") class VoltageHit(Storm):     __storm_table__ = "volt_sensors"     id = Int(primary = True)     volt_sensor_id = Int()     raw, value = Float(), Float()     date_time = DateTime()     def __init__(self, volt_sensor_id, raw, value):         self.volt_sensor_id = volt_sensor_id         self.raw = raw         self.value = value         self.date_time = datetime.datetime.now() it looks like this actually happens in a different function. I think that it fails when it reaches the commit / insert / update point thanks for any tips shawn