going Crazy! Getting PingUndefined in Flash Comm Server chat session(Screenshot)

Hi guys,

I have spent a good few days on this flash comm server that I'm trying to help a friend with. I got it 90% working but when 2 people connect to chat, the text box keeps saying 'pingundefined'. In the Flash Comm Server activity monitor it registers that a message is going through each time this comes up. I don't think they had a cross domain policy file in effect either, will that cause it?

Any suggestions are appreciated!
http://img18.imageshack.us/img18/299/screenshotlsp.jpg

Also,

Do you guys think the cross domain policy file I had to makeshift is right? I got it online:

<cross-domain-policy>
<allow-access-from domain="*" secure="false"/>
<allow-http-request-headers-from domain="*" headers="*" secure="false"/>
</cross-domain-policy>