The following error is displayed to the end user as a message box when user clicks 'Εργασίες' or 'Ειδοποιήσεις': Message box title: [Message from webpage] Mesage box text: 'com.google.gwt.user.client.rpc.StatusCodeException: The call failed on the server; see server log for details' After that message appears, none of the tabs of 'Πίνακας Ελέγχου' shows any data. Clicking 'Διαθέσιμες υπηρεσίες' does not fetch any data, while clicking the other tab titles shows the message box described above. I noticed that the malfunction always occurs a number of minutes after the portal is started and the first user logs in. The error also appears in the Service Portal version handed over from K2Dyn. A server log is included as an attachment.