Status error in Collaboration Launch Pad

I still got always an exeption message

"Service not found: RTCClientAwareness"

if I try to change the status of my account in the Collaboration Launch Pad. I had everything done described in nw04 help administration document to run RTC although RTC is not working. Any ideas? (by the way, I had used Rapid Installer 2.0 to install EP6.0 on WAS 6.40.)