phone book entry

I developed a client that was working fine for a couple of months. Then something changed...and I'm not sure what caused it to break.

 

 

Now when my client tries to connect, it reports the error "The system could not find the phone book entry for this connection."

 

 

I have uninstalled/reinstalled the client components in various configurations, but cannot find the combination that worked before.

 

 

Anybody have any clues about this message?