popen

[Faith]

hi all, 
I am trying to run a batch file from my python program, in the end of
the batch file I call a command called creterelease but for some
reason its not being executed.. I know there is nothing wrong with the
bacthfile cause it worked fine when I run it from the command line ..
so if anyone knows about why could that be happenning please let me
know.. by the way I tried to use system and the othe popen version and
I still got nothing..
well ... hope you can help..
thanks,
Faith