Try to allow X sessiosn before.
From an X Terminal and as root user do:
xhost + <your ip >
HTH
David Ballester Montolio Responsable de Sistemas y Comunicaciones Kern Pharma, S.L. www.kernpharma.com
GNU!
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using 'my.ip.addres:0.0' as the value of the DISPLAY variable.