Hello, I am using Report Viewer 2008 SP1 on a SharePoint 2008 site. I am randomly getting the following error when trying to view a report (designed with SQL Reporting Services 2008, SQL Server 2008 SP1): An error occurred during client rendering. Execution '0omkmo45qhlg5b45i2vzrm45' cannot be found If I refresh the page, then the error goes away and I can see the report. The error seems to be related to the fact that reporting engine (or Sharepoint site?) becomes idle from time to time as no user hits it. Using Internet Explorer 8. Thank you, M. R.

Hi M.Rusu, It might be session timeout. please refer to http://blogs.msdn.com/b/jgalla/archive/2006/10/11/session-timeout-during-execution.aspx to keep a session live longer. thanks, Jerry

Hi M.Rusu, It might be session timeout. please refer to http://blogs.msdn.com/b/jgalla/archive/2006/10/11/session-timeout-during-execution.aspx to keep a session live longer. thanks, Jerry

Hi Jerry, Thank you for your suggestion. I cannot however alter session parameters, this would be useless. The reason is that this report that sits on our Sharepoint site may not be hit by any user for several days in a row. I saw that many people are experiencing this error, I did a lot of research on the web, so far there is no solution to this issue. I'm surprised that this is still happening in Reporting Services 2008. Can you please provide a reliable fix or maybe fill a bug report? Regards, M. Rusu