"If you still have trouble, try opening a support ticket"
Please see the existing unresolved support ticket..
The steps look fine, except that you did not use the envionment specified in the support ticket of IE6..
The other suggestions have already been checked, as described in the support ticket..
See the rest of the action, replacing radscriptmanger resolves the problem, all else works fine, except radscriptmanger breaks AJAX with sys object error...