got ‘Sheet.Activesheet’ is null or not an object error with internet explor

Pls., I need someone to help me out.I got ‘Sheet.Activesheet’ is null or not an object error with internet explorer when i was trying to view a report in our intranet site.I’ve remved all tool bars that could be blocking the report to load, added it as part of the secured site, but each time to click the document to load it gives error on page and when you click on the traffic icon you see a detail descriptn of the error which says got ‘Sheet.Activesheet’ is null or not an object.I’ve tried all means but no solution yet.Pls., help