getting error in Portal "Error while generating the PDF" for BI Report

Hi Experts,

we are gettign the error while trying to generate the PDF file from the Reports.

Earlier it was working fine Adobe Reader 8 , currently we have upgrated Adobe Reader 9 in our system.

After this upggradation browser "*Failed to open PDF in Browser"*

Could you please suggest me how to diagnostic the error. Do we need to configre something in the Portal or in the Backend BI system for this.

Please suggest me the needful on this?

thanks

Narpal