NodeJS Application stops instantly after start

I am trying to run a NodeJS application on Windows 7. It was created on a MacOSX and it worked fine, started it on a CentOS too and it's OK, but when I run it on Windows with

     npm start

Node spits out the usual starting of a line:

     C:\Git\My.App.2014>npm start

    > MyApp@0.0.1 start C:\Git
    > node ./bin/www

    C:\Git\My.App.2014>

And instead of running the server, it just stops instantly. Any ideas?