no response on control socket

Hello, i am trying to use appdynamics with Node.js but i am getting this error:

appdynamics v4.1.7.0 (25-10-2015 10:29:41.893): ERROR: no response on control socket
appdynamics v4.1.7.0 (25-10-2015 10:30:01.894): ERROR: unable to contact proxy

My profile config: 

require("appdynamics").profile({
    debug: true,
    proxyHost: 'IP',
    proxyPort: 'PORT',
    controllerHostName: 'paidXXXXX.saas.appdynamics.com',
    controllerPort: 80,
    controllerSslEnabled: false,
    accountName: 'ACCNAME',
    accountAccessKey: 'MYKEY',
    applicationName: 'APPNAME',
    tierName: 'TIERNAME',
    nodeName: 'process'
});

I am using the correct proxy configuration? I am sure the proxy is working fine.