Hello, We managed to make the service work: http://www.perpetuumsoft.com/Demo/SLViewer/DemoReportsService.svc But sometimes there are server errors: our applicqtion works for some time, then it falls down and after a couple of minutes starts to work again. Our logs don't indicate any errors in our application. Error message: [UnexpectedHttpResponseCode] Arguments: Not Found Debugging resource strings are unavailable. Often the key and arguments provide sufficient information .... Please advise. Looking forward to your suggestions. Thank you in advance. Kind Regards, Kate Mokhoff Post Edited (KateM) : 9/3/2008 8:23:10 AM GMT