I have one session in the application. When I click on "Invalidate Session" the session disappears from the Orion console (but any Attributes remain visible) and the Java console prints: Exception occurred during event dispatching: java.lang.ArrayIndexOutOfBoundsException at com.evermind.gui.server.http.HttpSessionsAdministrationPanel.actionPerformed (JAX, compiled code) at javax.swing.AbstractButton.fireActionPerformed (line 1066) ... and another 50 lines or so ;) Jeroen T. Wenting [EMAIL PROTECTED] Murphy was wrong, things that can't go wrong will anyway Jeroen T. Wenting [EMAIL PROTECTED] Murphy was wrong, things that can't go wrong will anyway