vista buisness problems

running K-Pacs on xp pro and on vista buisness.
problem is vista I can send images to xp pro and can echo, xp can not send or echo the vista box. All ae, ip, ports are correct. firwalls are disabled. I am allmost sure vista is the problem but very hard to trace the issue. Any suggestions?
thanks

found that the k-pacs server will not start on vista.
How can I get the server to start on vista????