Upload file field validation is not working on content profile module

Hi ,

Iam using content profile module for profile registration , so i used file field cck , which i gave this field as required the validation is not working .. i tried with form_alter for giving custom code not able to get the formvalues else than the default form

Array
(
    [user_registration_help] => Array
        (
            [#value] => 
        )

    [account] => Array
        (
            [#type] => fieldset
            [#title] => Account information
            [#weight] => -10
            [name] => Array
                (
                    [#type] => textfield
                    [#title] => Username
                    [#default_value] => 
                    [#maxlength] => 60
                    [#description] => Spaces are allowed; punctuation is not allowed except for periods, hyphens, and underscores.
                    [#required] => 1
                )

            [mail] => Array
                (
                    [#type] => textfield
                    [#title] => E-mail address
                    [#default_value] => 
                    [#maxlength] => 64
                    [#description] => A valid e-mail address. All e-mails from the system will be sent to this address. The e-mail address is not made public and will only be used if you wish to receive a new password or wish to receive certain news or notifications by e-mail.
                    [#required] => 1
                )

        )

    [#uid] => 
    [display] => Array
        (
            [#type] => value
            [#value] => 3
        )

    [current_id] => Array
        (
            [#type] => value
            [#value] => 1
        )

    [current_date] => Array
        (
            [#type] => value
            [#value] => 1255952885
        )

    [legal] => Array
        (
            [#type] => fieldset
            [#title] => Terms and Conditions of Use
            [#weight] => 29
            [conditions] => Array
                (
                    [#value] =>  
                )

            [legal_accept] => Array
                (
                    [#type] => checkbox
                    [#title] => Accept Terms & Conditions of Use
                    [#default_value] => 
                    [#weight] => 50
                    [#required] => 1
                    [#element_validate] => Array
                        (
                            [0] => checkbox_validate_validation
                        )

                    [#pre_render] => Array
                        (
                            [0] => checkbox_validate_add_required_symbol
                        )

                )

        )

    [timezone] => Array
        (
            [#type] => hidden
            [#default_value] => 19800
            [#id] => edit-user-register-timezone
        )

    [submit] => Array
        (
            [#type] => submit
            [#value] => Create new account
            [#weight] => 30
        )

    [#validate] => Array
        (
            [0] => user_register_validate
        )

    [#parameters] => Array
        (
            [0] => user_register
            [1] => Array
                (
                    [storage] => 
                    [submitted] => 
                    [post] => Array
                        (
                        )

                )

        )

    [#build_id] => form-d559d55319d4f2dabe55d1dd8ed20968
    [#type] => form
    [#programmed] => 
    [form_build_id] => Array
        (
            [#type] => hidden
            [#value] => form-d559d55319d4f2dabe55d1dd8ed20968
            [#id] => form-d559d55319d4f2dabe55d1dd8ed20968
            [#name] => form_build_id
        )

    [form_id] => Array
        (
            [#type] => hidden
            [#value] => user_register
            [#id] => edit-user-register
        )

    [#id] => user-register
    [#description] => 
    [#attributes] => Array
        (
        )

    [#required] => 
    [#tree] => 
    [#parents] => Array
        (
        )

    [#method] => post
    [#action] => /Sankar1/demo/user/register
    [#submit] => Array
        (
            [0] => user_register_submit
        )

)

How to solve this issue

Thanks in advance