Networked PC, FSUIPC connection failed, simconnect ok

[skycamel]

Hi,
I'm using FSX in Full Screen so I wanted to run FSXWX on a networked Pc but i alwas get "FSUIPC connection failed" and "Connection closed"
I have the latest and registered version of FSUIPC.
Simconnect works fine.
Cheers,
Luc