Checks after phase MAIN_SHDRUN/CMDFILE_UPG were negative!

Hello All

I am getting following  error during theCRM upgrade at the Preprocessing phase.

Checks after phase MAIN_SHDRUN/CMDFILE_UPG were negative!

Last error code set: Calling 'S:\SUM\abap\exe/tp' failed with return code 232, check S:\SUM\abap\log\SAPup.ECO for details<br/> tp used shadow connect.

Sql server is install on another server.

Thanks for any help,

Reza