javascript – IE. JSON.parse (..) invalid character

I run the code with chrome and it works fine, but when I run it in IE. I get the error ->

enter the description of the image here

I have been reading and "supposedly" is that I have the JSON badly formed, but if it were like that, it would not work in chrome and I the JSON see it well …

{
    "areaCarga": "custom - app",
    "visualization": "M-T-2",
    "text": "Other related products",
    "multimedia": [{
        "titulo": "1-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "2-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "3-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "4-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "5-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "6-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "7-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    },
    {
        "titulo": "8-tecnologia Digital",
        "entrada": " 100% digital, ideal para operar en cualquier momento del día",
        "enlace": "",
        "imagen": "./images/hablamos-01.jpg"
    }]
}

I'm using IE-> 11 and I'm not using frameworks or anything for Javascript, it's a .js echo by me, native, without jquery or anything.

I repeat: Chrome works well the carousel, IE gives the error of the image.

// Main function: load the input element.json
function cargaMultiContentVistaCarousel () {

    // we perform JSON validation process
    var request = new XMLHttpRequest ();
        request.open ("GET", "./entry_multi_content_vista_carousel_10.json", true);
        request.send (null);
        request.onreadystatechange = function () {
            if (request.readyState === 4 && request.status === 200) {
                var MyJSON = JSON.parse (request.responseText);
                processMultiContentVistaCarousel (MyJSON);
            }
        }
}


function procesMultiContentVistaCarousel (JSON) {