Uncaught Exception - Terminating Application

Hash code query failed

::exception_handler
Exception Object
(
    [message:protected] => Hash code query failed
    [string:Exception:private] => 
    [code:protected] => 0
    [file:protected] => /home1/redsailaruba/public_html/modules/mailing_list/classes/DBRecord.MLEntry.class.php
    [line:protected] => 70
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /home1/redsailaruba/public_html/modules/mailing_list/classes/DBRecord.MLEntry.class.php
                    [line] => 46
                    [function] => lookupByHashCode
                    [class] => MLEntry
                    [type] => ::
                    [args] => Array
                        (
                            [0] => 23b58def11b45727d3351702515f86af
                        )

                )

            [1] => Array
                (
                    [file] => /home1/redsailaruba/public_html/modules/mailing_list/classes/Module.MailingList.class.php
                    [line] => 26
                    [function] => commit
                    [class] => MLEntry
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [2] => Array
                (
                    [file] => /home1/redsailaruba/public_html/classes/Module.class.php
                    [line] => 57
                    [function] => signup_form_process
                    [class] => MailingList
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [3] => Array
                (
                    [file] => /home1/redsailaruba/public_html/index.php
                    [line] => 123
                    [function] => dispatch
                    [class] => Module
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [4] => Array
                (
                    [file] => /home1/redsailaruba/public_html/index.php
                    [line] => 99
                    [function] => _doModuleCall
                    [args] => Array
                        (
                            [0] => mailing_list
                            [1] => signup_form_process
                            [2] => Array
                                (
                                )

                        )

                )

        )

    [previous:Exception:private] => 
)