Not able to view reports

Microsoft.Reporting.WinForms.ReportServerException
An error occurred within the report server database.  This may be due to a connection failure, timeout or low disk condition within the database. (rsReportServerDatabaseError)

Stack Trace:
   at Microsoft.Reporting.WinForms.ServerReportSoapProxy.OnSoapException(SoapException e)
   at Microsoft.Reporting.WinForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.ProxyMethodInvocation.Execute[TReturn](RSExecutionConnection connection, ProxyMethod`1 initialMethod, ProxyMethod`1 retryMethod)
   at Microsoft.Reporting.WinForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.LoadReport(String Report, String HistoryID)
   at Microsoft.Reporting.WinForms.ServerReport.EnsureExecutionSession()
   at Microsoft.Reporting.WinForms.ServerReport.SetParameters(IEnumerable`1 parameters)
   at Microsoft.ConfigurationManagement.AdminConsole.SrsReporting.ReportViewerWindowsForms.SetParameterValues_DoWork(Object sender, DoWorkEventArgs e)

-------------------------------

Microsoft.Reporting.WinForms.ReportServerException
Invalid column name 'EditSessionID'.
Invalid column name 'SitePath'.
Invalid column name 'SiteZone'.
Invalid column name 'DataSetInfo'.
Invalid column name 'ReportDefinitionPath'.

Stack Trace:
   at Microsoft.Reporting.WinForms.ServerReportSoapProxy.OnSoapException(SoapException e)
   at Microsoft.Reporting.WinForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.ProxyMethodInvocation.Execute[TReturn](RSExecutionConnection connection, ProxyMethod`1 initialMethod, ProxyMethod`1 retryMethod)
   at Microsoft.Reporting.WinForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.LoadReport(String Report, String HistoryID)
   at Microsoft.Reporting.WinForms.ServerReport.EnsureExecutionSession()
   at Microsoft.Reporting.WinForms.ServerReport.SetParameters(IEnumerable`1 parameters)
   at Microsoft.ConfigurationManagement.AdminConsole.SrsReporting.ReportViewerWindowsForms.SetParameterValues_DoWork(Object sender, DoWorkEventArgs e)

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 This is the error I'm getting when I try to open a report through SCCM or

the web error

• An error occurred within the report server database. This may be due to a connection failure, timeout or low disk condition within the database. (rsReportServerDatabaseError)
  • For more information about this error navigate to the report server on the local server machine, or enable remote errors

• An error occurred within the report server database. This may be due to a connection failure, timeout or low disk condition within the database. (rsReportServerDatabaseError)
  • Invalid column name 'EditSessionID'. Invalid column name 'SitePath'. Invalid column name 'SiteZone'. Invalid column name 'DataSetInfo'. Invalid column name 'ReportDefinitionPath'.

Anythoughts?

Thanks

Paul