IFrame problem with IE11

I am using the image uploader plugin. It works perfect on Chrome, Safari, Firefox and IE8-10, but it fails on IE11.

The problem is an access denied on getFrameDocument function.

getFrameDocument: function () {
var i = this.$;
try {
i.contentWindow.document;
} catch (j) {
i.src = i.src;
if(c && b.version < 7) {
window.showModalDialog('javascript:document.write("<script>window.setTimeout(function(){window.close();},50);</script>")');
}
}
return i && new g(i.contentWindow.document);
},

The first call to i.contentWindow.document throws an exception but i.src = i.src doesnt fix it, throwing access is denied error.
This is the content of my iframe (weird) :

<body onload="javascript:getInfo();">
<div class="mainContent" id="contentContainer">
<div class="title" id="mainTitle">This page can’t be displayed</div>
<div class="taskSection" id="taskSection">
<ul class="tasks" id="cantDisplayTasks">
<li id="task1-1">Make sure the web address <span class="webpageURL" id="webpage">//ieframe.dll/dnserrordiagoff.htm# </span>is correct.</li>
<li id="task1-2">Look for the page with your search engine.</li>
<li id="task1-3">Refresh the page in a few minutes.</li>
</ul>
<ul class="tasks" id="notConnectedTasks" style="display: none;">
<li id="task2-1">Check that all network cables are plugged in.</li>
<li id="task2-2">Verify that airplane mode is turned off.</li>
<li id="task2-3">Make sure your wireless switch is turned on.</li>
<li id="task2-4">See if you can connect to mobile broadband.</li>
<li id="task2-5">Restart your router.</li>
</ul>
</div>
</div>

</body></html>
</iframe>