No graphs (charts) are included in scheduled SCOM reports

Today I have noticed that SCOM reports that are scheduled to be delivered as e-mail attachments do not contain chart data.

Scheduled SCOM report - chart missing
Scheduled SCOM report - chart missing

At the time when affected scheduled report is executed, the following event is logged in Application log of the server running SQL Reporting Services:
Log Name: Application
Source: Report Server Windows Service (MSSQLSERVER)
Event ID: 108
Level: Error
Description:
Report Server Windows Service (MSSQLSERVER) cannot load the EnterpriseManagementChartControl extension.

After some investigation, it turned out that this is a know issue which is documented in the following knowledge base article:

Scheduled reports that you create by using SQL Server 2008 Reporting Services (SSRS) do not display chart data in System Center Operations Manager 2007 R2http://support.microsoft.com/kb/972821



After editing ReportingServicesService.exe.config file, you should be able to see chart inlcuded in SCOM report.

Scheduled SCOM report - chart included
Scheduled SCOM report - chart included
No graphs (charts) are included in scheduled SCOM reports