I'm running 3.0 upgraded from 2.x (whatever the latest pre 3 version was). I realized we weren't getting 
any alerts today. I checked, and zenactions is down. It will not start. The log entries are below.
Line 13 is a transform line I added. It adds circuit IDs and phone numbers to e-mail alerts. Not all devices
have something in the comments field. I got this same complaint when I ran the pre 3.0 upgrade zenpack.
I removed the transform, upgraded, and then put it back in. It hasn't caused any apparent issues for a
week or so. It ran fine on previous versions of Zenoss. Now it seems to be causing a big problem. I 
searched the archives. I found something about deleting pickles, but that didn't apply for me. I found 
something about referencing non existent fields. That shouldn't apply to me, unless it is unhappy about
processing events for devices that have no entries in the comments field.

Any ideas?
Thanks,
Matthew

2010-07-28 21:46:09,488 WARNING zen.Events: Error processing transform/mapping on Event Class /
Problem on line 13: AttributeError: 'NoneType' object has no attribute 'comments'
evt.message = evt.message + ('\n') + str(device.comments)

Transform:
  0 # Suppress any non-ping, non-clear events from devices that have outstanding
  1 # ping down events.
  2 #
  3 # This transform is sensitive to the event cache timeout. If the ping down
  4 # event comes in less than "timeout" seconds before the subsequent events, the
  5 # subsequent events will not be suppressed. You can find the event cache
  6 # timeout setting on the Event Manager page in the web interface.
  7 if getattr(evt, 'severity', 0) > 0 \
  8    and getattr(evt, 'eventClass', '/Unknown') != '/Status/Ping' \
  9    and device and device.getPingStatus() > 0:
 10    evt.eventState = 2
 11 
 12 #add comments to email
 13 evt.message = evt.message + ('\n') + str(device.comments)