Mark, it sounds like a missing or faulty “DevClusters.xml”. This is the “methods” file that EZSrve uses to know what to do about the various device types.
Please use the just posted Java applet to reupgrade your EZSrve. This loads the DevClusters file in addition to the main firmware. If you get error after that, then you’ll need to clean the Devices.xml file.
V52 of the PLM was OK, but there were some issues with concurrent X10 and Insteon messaging. If you wish it reflashed, you’d have to wait until the next batch of reflashing is scheduled with Smarthome (about 3-4 weeks from now as we just did one) We are currently getting V85 from Smarthome.