[Xymon] content test

I'm trying to do a content check, but all I'm seeing under the "content" column is:

No output received from server

The http test associated with the content check is working correctly, the http headers are being returned. I can retrieve the page using wget from the same server that I'm running the content test on. I've tried changing the user-agent. I even set the user-agent to "Xymon" with wget and was able to retrieve the page. Anybody have any idea what is going one here?

Thanks, Larry Barber