I am trying to do a greenplum data load from windows and I get an error:

Error while executing 'C:\Program Files (x86)\Greenplum\greenplum-loaders-4.2.1.0-build-2\bin\gpload.py -f c:\temp\control0.cfg'

I have installed the GP loader for windows, but it doesn't seem to work. I see it's a python program. Is there some other setup / configuration I need to do?