Performance Report not working

I am running SBS 2003 R2 and in 'Server Management' when I go to 'Monitoring and Reporting' and try to view my 'Performance Report', I receive the following:

 The page cannot be displayed 
An error occurred on the page you are trying to view. 

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To work around this problem, perform the following steps. After each step, try again to access the page.

Ensure that the MSSQL$SBSMONITORING service is started. 
Ensure that the server is not low on memory or disk space. 
Restart the server. 
Verify that the server is functional and that there are no system-wide problems. 
Run the Set Up Monitoring Reports and Alerts task in the Server Management Monitoring and Reporting taskpad.