HTTP Error 500.19 - Internal Server Error

Hello,

I have SCCM 2007 Sp2 installed on Windows 2008 R2. I wanted to use the Office web components and followed the article

http://blogs.msdn.com/b/vijaysk/archive/2009/02/12/sccm-2007-charting-functionality-does-not-work-on-64-bit-iis.aspx

Now I see the charts but now when I click on the Package to look at the report I see the following error. Now I see an error in the System Status for the Reporting message and also the windows update services console is not working as well.
<fieldset>
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.
</fieldset>
<fieldset><legend>Detailed Error Information</legend>
Module       DynamicCompressionModule
Notification       SendResponse
Handler       ASPClassic
Error Code       0x8007007e
Requested URL       http://rha-sccm:80/SMSReporting_RHA/Report.asp?ReportId=107&AdvertID=RHA2000C
Physical Path       c:\inetpub\wwwroot\SMSReporting_RHA\Report.asp
Logon Method       Not yet determined
Logon User       Not yet determined
</fieldset>
<fieldset><legend>Most likely causes:</legend>

    The worker process is unable to read the applicationhost.config or web.config file.
    There is malformed XML in the applicationhost.config or web.config file.
    The server cannot access the applicationhost.config or web.config file because of incorrect NTFS permissions.

</fieldset>
<fieldset><legend>Things you can try:</legend>

    Look in the event logs for information about why the configuration files are not readable.
    Make sure the user identity specified for the application pool, or the authenticated user, has the required permissions to access the web.config file.

</fieldset>
<fieldset><legend>Links and More Information</legend></fieldset>
 

Any ideas on how to resolve this.


Thanks