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HI Guys,

The only way to solve this problem force customer to login before they could do any transaction, that what I have done on my website so customer register first and then place order .

Like this I am creating data base and same myself from this problem.

I suggest pls pls don't install check out module which is creating this problem so best of luck.

It is a problem with zencart when you try to install the checkout module.

DrByte:

Seems like you might be missing updates to one or more of these files. I recommend verifying that they're all updated to the v139h version, by re-uploading the v139h version of each:

• /includes/classes/shopping_cart.php
• /includes/modules/pages/checkout_confirmation/header_php.php
• /includes/modules/pages/checkout_payment/header_php.php
• /includes/modules/pages/checkout_shipping/header_php.php
• /includes/modules/pages/shopping_cart/header_php.php
• /ipn_main_handler.php

For the next person with this problem,
those didnt work for me , but I found my fix at - includes/modules/pages/login/header.php.php

I had exactly the same error on a customer's website - new install of 1.39h.

As it happened, I have another install 1.38 and that wan't producing the error.

Both sites had the same Addon (Sitewide Markup) - once removed from the new site (1.39h) the error stopped and all is working again.

If you are getting this error, check all your addons, one of them will be out of date.

DrByte:

Seems like you might be missing updates to one or more of these files. I recommend verifying that they're all updated to the v139h version, by re-uploading the v139h version of each:

• /includes/classes/shopping_cart.php
• /includes/modules/pages/checkout_confirmation/header_php.php
• /includes/modules/pages/checkout_payment/header_php.php
• /includes/modules/pages/checkout_shipping/header_php.php
• /includes/modules/pages/shopping_cart/header_php.php
• /ipn_main_handler.php

This solved it for me.
I had most definately an old mod added to the site. GIFT certs attribute mod I think it was.

Anyways fresh install of the above files, now no preblems, for the next while anyways. :clap:

P.S. I will re aply this file as well just to be on the safe side.

• includes/modules/pages/login/header.php.php.
  Thanks everyone
  Billy:cool: