Order-confirmations email failed

I was wondering if you can help me with a problem I'm having with Zencart emails.

It is just order-confirmations that are failing in checkout and checkout_extra modules.
The emails are not showing in the zencart archive.

My URL: http://www.bricoleurre.com/
My hosting company : http://www.phpnet.org/

My Email settings:

E-Mail Transport Method PHP
E-Mail Linefeeds LF
Use MIME HTML When Sending Emails true
Send E-Mails true
Verify E-Mail Addresses Through DNS false
Email Archiving Active? true
E-Mail Friendly-Errors false
Email Address (Displayed to Contact you) [email protected]
Email Address (sent FROM) [email protected]
Emails must send from known domain? Yes
Email Admin Format? HTML
Send Copy of Order Confirmation Emails To [email protected]
Send Copy of Create Account Emails To - Status 0
Send Copy of Create Account Emails To [email protected]
Send Copy of Tell a Friend Emails To - Status 0
Send Copy of Tell a Friend Emails To [email protected]
Send Copy of Customer GV Send Emails To - Status 0
Send Copy of Customer GV Send Emails To [email protected]
Send Copy of Admin GV Mail Emails To - Status 0
Send Copy of Customer Admin GV Mail Emails To [email protected]
Send Copy of Admin Discount Coupon Mail Emails To - Status 0
Send Copy of Customer Admin Discount Coupon Mail Emails To [email protected]
Send Copy of Admin Orders Status Emails To - Status 0
Send Copy of Admin Orders Status Emails To [email protected]
Send Notice of Pending Reviews Emails To - Status 0
Send Notice of Pending Reviews Emails To [email protected]
Set "Contact Us" Email Dropdown List
Allow Guest To Tell A Friend false
Contact Us - Show Store Name and Address 1
Send Low Stock Emails 0 info
Send Low Stock Emails To [email protected]
Display "Newsletter Unsubscribe" Link? true
Audience-Select Count Display true
SMTP Email Account Mailbox YourEmailAccountNameHere
SMTP Email Account Password ****************
SMTP Email Mail Host mail.EnterYourDomain.com
SMTP Email Mail Server Port 25
Convert currencies for Text emails £,£:€,€

Try the debug logging tool from step 2a of this FAQ: https://www.zen-cart.com/tutorials/index.php?article=82

Then do another checkout test, and check the log for errors.

If you're using PayPal, you might try this:
http://www.zen-cart.com/forum/showthread.php?p=485015#post485015

[06-jan-2008 17:19:06] PHP Fatal error:  Call to a member function on a non-object in /home/users/.../.../www/includes/functions/functions_email.php on line 405

In /includes/auto_loaders/paypal_ipn.core.php around line 173, i add this code:

/**
 * Breakpoint 130.
 * 
 * messageStack = new messageStack();
 * 
 */
  $autoLoadConfig[130][] = array('autoType'=>'classInstantiate',
                                 'className'=>'messageStack',
                                 'objectName'=>'messageStack');

...and everything works well!