Project Area Linking---RTC&RQM 500 error

Hi,
I setup my environment follow :http://jazz.net/library/techtip/304

Both RTC server amd RQM server are V2.0. I changed my two computer names as rtc,rqm, and make sure they can cross communicate on each machine. I double checked these four files are right, which are:
https://rtc:9443/jazz/rootservices
https://rqm:9443/jazz/rootservices
https://rtc:9443/jazz/friends
https://rqm:9443/jazz/friends

But When I added a link to a project, it reported:
"unable load URL：/jazz/proxy?uri=https%3A%2F%2Frtc%3A9443%2Fjazz%2Frootservices&dojo.preventCache=1257430368796，status：500"

I used https://rqm:9443/jazz/ootservices&dojo.preventCache=1257430368796, it showed:

"The requested resource () is not available."

What is this problem?

Thank you
Michelle