[Revan]

Its impossible to get an error on step 4 and it not having run up until that step.
Check that the following segments are like they should be:

PHP Code:

    var $_version = '3.5 Beta 5';
    var $version = 3505; 


PHP Code:

        $versions = array(
            1 => 3011,
            2 => 3501,
            3 => 3502,
            4 => 3503,
            5 => 3504,
            6 => 3505
        ); 


PHP Code:

            ),
            3505 => array(
                1 => 'Step 1) Choose Hack',
                2 => 'Step 2) Verify Environment',
                3 => 'Step 3) Altering Tables',
                4 => 'Step 4) Re-Importing Product',
                5 => 'Step 5) Finalising Upgrade',
                6 => 'Step 6) Upgrade Complete'
            )