"Run program in guest" VCO Workflow throws "File was not found" error in VCO connected to VCD 5.1

I am trying to execute a vbs script on a windows machine using "Run program in guest" VCO Flow. I am using the Program path input only and placed the script under c drive for ease of testing , and trying to run a vmware script for testing as follows. I receive a VCO Flow error File <unspecified filename> was not found. What is wrong with the inputs.

Flowname                  :               Library/vCenter/Guest operations/Processes/Run program in guest

Inputs                        :

programPath                             c:\cscript.exe vm-support.vbs

arguments

workingDirectory

environment                               not set

interactivesession                      No

Output                        :             File <unspecified filename> was not found

Thanks,

MuruRam