Node script executable not working on Mac : env: node\r: No such file or directory

I have created my node script executable to execute some tasks grunt. On Windows, my node script works fine. But on Mac OS X (Yosemite), it's not working.

My node script has been published on Windows.

My node script is installed via npm command :

npm install -g task-app

My node script have this first line :

#! /usr/bin/env node

I tried many some solutions to solve my problem but I'm still stuck.

Here's these solutions that I used :

1. uninstall and reinstall Node.js
2. execute this command to create a link for node : sudo ln -s /usr/bin/nodejs /usr/local/bin/node
3. set my path with this command : export PATH=$PATH:/usr/local/bin/node

Do you have other solutions to propose ?

EDIT :

the beginning of my script :

#! /usr/bin/env node

var grunt = require('grunt');

//Get parameters from command line
var args = process.argv.splice(2);

[...]

After all, I found the solution to my problem.

As my node script file has been created on Windows, the file is DOS format (line endings in DOS format I think). So, I used a module which allow to converting a file to a unix format :

brew install dos2unix
sudo dos2unix /usr/local/lib/node_modules/task-app/src/task-app.js