Image 02.06 has the failure to reenable an Action. Image 02.06.04 and above fixes the problem.
No idea why the Discovery tool would not find the EZServe. Try unplugging the EZServe for a few minutes. See if the Discovery tool finds it after the power cycle. Are you running the latest 1.1 Discovery tool? Also is the EZServe running in DHCP mode?
Ignore the “Error sending” trace entry. It does not indicate a failure.