Sencha touch get json error
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Every time i try to work with sencha touch to get a json feed i always get this error.

    XMLHttpRequest cannot load http://api.example.com/index.php/news/all/format/json?_dc=1342630239638&node=root. Request header field X-Requested-With is not allowed by Access-Control-Allow-Headers.

how can i fix a work around to stop this i really want to work with sencha but most of my work will be working with json feeds???

any help

also my json outputted looks like this it doesnt have a rootproperty node??

    [{
        "id": "7253",
        "title": "hello",
        "description": "",
        "source": "syrianews",
        "cat_name": "Syrianews"
    }, {
        "id": "7208",
        "title": "hello",
        "description": "",
        "source": "syrianews",
        "cat_name": "Syrianews"
    }]