406 Not Acceptable Error

I'm getting the following error as well - not sure if it's related.

warning: Invalid argument supplied for foreach() in /home/csps/public_html/sites/all/modules/mail_edit/mail_edit.module on line 104.

I'm not sure if this is related, but since enabling the mail_edit module, any user action (registration, account deletion, etc.) has resulted in an array (representing the form or user object or something) dumping to the drupal_set_message area after submission. I think it might have something to do with the !username variable.

After disabling the module, the problem stopped. I'll try experimenting with the above suggestion later tonight when no one is using the site.

Array
(
    [id] => user_status_deleted
    [to] => ckdjs@lskdjfalsk.com
    [from] => admin@xxxxxx.ca
    [language] => stdClass Object
        (
            [language] => en
            [name] => English
            [native] => English
            [direction] => 0
            [enabled] => 1
            [plurals] => 0
            [formula] => 
            [domain] => http://xxxxx.ca
            [prefix] => 
            [weight] => 0
            [javascript] => 
        )

    [params] => Array
        (
            [account] => stdClass Object
                (
                    [uid] => 27
                    [name] => lsakdjfalskj
                    [pass] => 2dec1a985f70dc97a6780864b6ed12d8
                    [mail] => ckdjs@lskdjfalsk.com
                    [mode] => 0
                    [sort] => 0
                    [threshold] => 0
                    [theme] => 
                    [signature] => 
                    [created] => 1215718943
                    [access] => 0
                    [login] => 0
                    [status] => 0
                    [timezone] => -14400
                    [language] => 
                    [picture] => 
                    [init] => ckdjs@lskdjfalsk.com
                    [data] => a:2:{s:3:"rid";a:1:{i:5;i:5;}s:13:"form_build_id";s:37:"form-028098aa42cc7850127ee9fb37b13c45";}
                    [timezone_id] => 0
                    [rid] => Array
                        (
                            [5] => 5
                        )

                    [form_build_id] => form-028098aa42cc7850127ee9fb37b13c45
                    [roles] => Array
                        (
                            [2] => authenticated user
                        )

                    [profile_usertype] => Member of the Public
                    [profile_name] => sdfasdf
                    [profile_tos] => 0
                    [profile_usehandle] => 0
                )

        )

    [subject] => Account details for lsakdjfalskj at xxxxxx.ca (deleted)
    [body] => Array
        (
            [0] => lsakdjfalskj,

Your account on xxxxxxx.ca has been deleted.

If you have any questions, please send an email to: admin@xxxxx.ca .
        )

    [headers] => Array
        (
            [MIME-Version] => 1.0
            [Content-Type] => text/plain; charset=UTF-8; format=flowed; delsp=yes
            [Content-Transfer-Encoding] => 8Bit
            [X-Mailer] => Drupal
            [Errors-To] => admin@xxxxxx.ca
            [Return-Path] => If you have any questions, please send an email to: admin@xxxxxx.ca .
        )

    [headers] => Array
        (
            [MIME-Version] => 1.0
            [Content-Type] => text/plain; charset=UTF-8; format=flowed; delsp=yes
            [Content-Transfer-Encoding] => 8Bit
            [X-Mailer] => Drupal
            [Errors-To] => admin@xxxxxx.ca
            [Return-Path] => admin@xxxxxx.ca
            [Sender] => admin@xxxxxx.ca
            [Reply-To] => admin@xxxxxx.ca
            [From] => admin@xxxxxx.ca
        )

)

            [Sender] => admin@xxxxxx.ca
            [Reply-To] => admin@xxxxxx.ca
            [From] => admin@xxxxxx.ca
        )

)