Problem during install additional Cluster node

Hello All,

I am installing additionl cluster node,

I get this error:

An error occurred while processing option SAP EHP1 for SAP NetWeaver PI/Mobile/Banking 7.1 > MS SQL Server > System Copy > Target System > High-Availability System > Based on AS ABAP and AS Java > Additional Cluster Node( Last error reported by the step:

Error 2 (The system cannot find the file specified. ) in execution of a 'StartService' function, line (107), with parameter (SAPPXA_46).). You can now:

Any Idea help?

Thanks

Reza