TinyMCE in Internet Explorer does not load

My TinyMCE init looks like this:

    var tinymce_advanced_options = {
        mode : "textareas",
        theme : "advanced",
        editor_deselector : "mceNoEditor",
        theme_advanced_resizing_min_width : 500,
        theme_advanced_resizing_max_width : 800,
        plugins : "autoresize,paste,preview,safari,table,contextmenu,paste,imagepopup,emotions",

        width: "800",
        button_title_map: false,
        apply_source_formatting: true,
        theme_advanced_toolbar_align: "left",
        theme_advanced_buttons1: "formatselect,outdent,indent,seperator,undo,redo,separator,emotions",
        theme_advanced_buttons2: "justifyleft,justifycenter,justifyright,separator,bold,italic,separator,bullist,numlist,link,separator,image开发者_StackOverflow社区popup,table,separator",
        theme_advanced_buttons3: "preview",
        plugin_preview_width : "500",
        plugin_preview_height : "600",

        theme_advanced_toolbar_location: "bottom",
        theme_advanced_resizing : true,
        theme_advanced_blockformats : "p,h2,h3,blockquote"
    };

This loads fine in Firefox whereas in Internet Explorer 7, the spinner keeps spinning and never loads.

Any clues appreciated.

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Try commenting out all lines apart from the top to first of all get something working in IE7. Then uncomment line by line to see if its any part of your configuration.