i have reactivated my old OX Server 6.4.1-6318.
It was the Old Live CD with Upuntu Dapper
After i have installed the server without any errors, i can loggin in the normal User Gui with admin/password.
But when i try to connect to the Admin Gui i have the following error message:

Fehlermeldung: Error unmarshaling return header; nested exception is:
java.io.EOFException (SVL-0001,1088923759-43)

What can i do?