When we click "Update Preview" on our site using XPM in IE, we always get the following javascript error: "Access is denied." in IE console and the browser never finishes the "Loading.." overlay.
The error comes from Content_v7.1.0.66.15_.aspx, Line: 38, Column: 312, which refers to var a=window.parent.frames["cookie_cleaner"].
In Chrome there is no issue. Any clues?