error log in servoy-admin vers. 3.5.7

Every time one specific user is starting the smart client I get the error message in the server log:

2008-12-16 07:41 RMI TCP Connection(269)-192.168.16.17 ERROR com.servoy.j2db.util.Debug destroyObject: java.sql.SQLException: JZ0C0: Verbindung wurde bereits geschlossen (= connection already closed).

What does it mean and what is the problem?

Thomas

I don’t know where it comes from but it says that Servoy (or a plugin?) is trying to close a connection that is already closed.