LoadRunner script failing with 403 Forbidden Error -- Need Help!!!!!

Hi,

I am having some issues with my loadrunner script created with HP LR 11.04 using web http/html protocol.

I can record the script using firefox as the application does not work with IE9.When I record the script I see pop-up messages for certificate and click ok and continue.

I can record the script successfully.  But when I run the script playback, I receive Error 403 Forbidden.

I have added the following headers as well:

Pragma, Cache Control, Accept, RequestVerficationToken, Accept.

THe script runs fine and logs in.  After login the script fails with the message --

Error -26628: HTTP Status-Code=403 (Forbidden)

Please if anyone can let me know how we can resolve this issue would really appreciate it.