TYPO3 Core

With Internet Explorer 8, when I want to load the form wizard I get a blank page.

I get two JavaScript errors :

First

Message : Identifier, string or number expected
Line : 2171
Character : 6
in JavaScript compressed file

Lines 2165 to 2175 are (2171 is line 7 below) :

    constructor: function(config) {
        Ext.apply(this, {
            configuration: {
                attributes: {
                    accesskey: '',
                    alt: '',
                    class: '',
                    dir: '',
                    disabled: '',
                    id: '',
                    lang: '',

Second

Message : 'TYPO3.Form.Wizard' is Null or is not an object.
Line : 178
in file /typo3/sysext/form/Classes/Controller/Wizard.php

Line 178 of rendered Wizard.php is :

TYPO3.Form.Wizard.Settings = {

Of course the JavaScript compressed file is included before line 178 as shown in Wizard.php.html file.