SyntaxError: missing ; before statement

Calling rest json api from my site using proxy,but firebug console throws error "SyntaxError: missing ; before statement"

Here is my code

Ext.define('User', {

extend: 'Ext.data.Model',

fields: ['ip']

});

var jsonStore = new Ext.data.Store({

model: "User",

proxy: {

type: 'jsonp',

url: 'http://mysite.com/ip',

useSimpleAccessors: true

},

autoLoad: true,

crossDomain: true

});

jsonStore.load();

Is it a problem with response,tried changing type:'json' but it looks into the local json file location.

if any correction required in json url response what needs to be done.

SyntaxError: missing ; before statement