Ewa Net Login problem...

[Can]

I already installed epc net 01.2008 and working.
Licence also ok and lights are green in admin tool.

Problem is:
When I start Epc net in programs, java starts and gives this message:

"Error while attempting Login action. Contact system administrator."
and can not run Epc net.

I also added screen capture for more information.

I seems like this message comes from Java, not from Epc net.

How can I solve this problem?

Any idea? Comments?