eCATT and QTP integration isuue

Hi,

I am trying to execute QTP Scripts through eCATT. In this regard i have done the following settings

"

Check whether or not you have the roles - SAP_ECAT, SAP_ECET and SAP_ECST in your login id.

Check the patch levels, support packages of the system

Check the external tool parameters in the ECCUST_ET table

Note : The mode of execution for external tool should be 'A' - With surface of external tool in the start options "

when i tried to eaxeute from eCatt i got the error called "Failure Starting Quick test professional"

Please any one help me on this............

Thanks and Regards

Dileep