Validator Problem

Client-side validation only takes place in Internet Explorer 4.0 and later, because it targets the Internet Explorer DOM.

All the logic for client-side validation is contained in a script library - WebUIValidation.js. By default, this script library is installed into your default root in the aspnet_client directory.

Have you checked to see if the script library is in the directory referenced by the error? If its not try to replace the script library manually.

Regards
Basia