Radius Configuration

I am trying to get ClearBox radius server to authenticate my hotspot users, but I am running into trouble. The logs for ClearBox say they’re passing back Access Accept, but Mikrotik’s monitor in the radius client area only show bad-replies. Does anybody have any suggestions on how to get this working? What is MikroTik expecting to receive back? How can I see the response that the router is receiving? has anyone actually used this radius server? http://www.xperiencetech.com is where I found it. ( was looking for a low cost windows server that uses a database for storage)

Any help, ideas, suggestions appreciated!

Brian