Hi Kent, I saw your logs and it showed that you might have some network or DNS issues:
2010-04-04 10:31:38,460 ERROR: API - Unable to create event channel session 'XXX'.
javax.xml.ws.WebServiceException: Failed to access the WSDL at: https://nxtop.arrowecs.se:443/Mgmt_EventChannel/EventChannel?wsdl.
Caused by: java.net.UnknownHostException: nxtop.arrowecs.se
Installing the NxTop Center as a virtual appliance does work but it does require Windows domain security to be setup correctly. Essentially what we are doing is leveraging the Hyper-V API so the NxTop Center (in a VM) can talk to the Hyper-V service (on the host) to manage NxTop images. See the docs for more information.