[Zope] Problems after a (system) crash

I had a system failure that resulted in the box shutting off without properly shutting down Zope. I got the box going again, and restarted Zope. Everything appears to be fine except for Squishdot (1-0-0) which, for some bizzare reason, doesn't transmit part or all of just a few of the many images. Has anyone experienced an unscheduled shutdown and, if so, what is the proper procedure for getting things going again. I sent a message to the Squishdot people, but they haven't posted the message to the board yet. Cheers, Ron