Notifications to multiple devices

Hi I am working on an app that needs to send notifications to multiple devices at once.

I have all keys set up and devices subscribed to a test channel. I have implemented notification before but did not send to multiple devices.

Some code:

PushFunc.js

var Cloud = require('ti.cloud');
var badge_number;
var APIKEY = 'correcttkey';
 
exports.subscribeToChannel = function devcieToken(){
    Cloud.PushNotifications.subscribeToken({
        channel: 'test',
        type: Ti.Platform.name == 'android' ? 'android' : 'ios',
        device_token: deviceToken
    }, function (e) {
        if (e.success) {
            //alert('Success : subscribed to test channel');
        } else {
            //alert('Error:' + ((e.error && e.message) || JSON.stringify(e)));
        }
    });
};
 
 
exports.uploadReport = function(deviceToken, incidentTitle, NAME) {
    var deviceTokenString = "";
 
    for (i = 0; i < deviceToken.length; i++){
        if (i == 0){
            deviceTokenString = deviceToken[i].NotID;
        }
        else{
            deviceTokenString = deviceTokenString+","+deviceToken[i].NotID;
        }
    }
 
    console.log('deviceTokenString is '+deviceTokenString+'.');
 
    Cloud.PushNotifications.notifyTokens({
        to_tokens: deviceTokenString,
        channel: 'test',
        payload: {
            "message":"message using defined params",
            "alert":"message using defined params",
            "type":"uploadReport",
            "badge": "+1",
            "icon":"appicon"
        }
    }, function(e){
        if(e.success) {
            alert('Push notification sent');
        } else {
            console.log('Error:\n' + ((e.error && e.message) || JSON.stringify(e)));
        }
    });
};

I first tried passing in an array to the 'to_tokens' but that did not work, so i switched to a comma separated string.

I am getting into e.success and getting the alert Push notification sent. I am also receiving the notifications on the correct test devices here. However, the app then crashes after that.

I am sending the notification in an on success of another web service which posts info to a database (below).

if (webserviceResponse=="OK"){
    alert("Successfully posted");   
 
    //I create an array with ids returned from this web service and call it deviceTokenArray
    if (deviceTokenArray.length >0){
        var myPushFunc = require('ui/handheld/pushFunc');
        myPushFunc.uploadReport(deviceTokenArray, definedVariable, definedVariable);
    }
    else{
        alert('no matching tokens');
    }               
}

I'm at a loss for the reason of the crash...It is hardly a Titanium bug?

Any help appreciated.

Titanium Classic 3.4.1. Testing with iPhone6 (8.1) sending notifications and iPad and iPhone 4s receiving the notification. Most recent version of Ti.cloud