Cart cannot be loaded or an order has already been placed using this cart

[MrConstantine]

when someone buy smtghg and is at the end of the buy this msg send the broswer???and  i have a lot of msg with error 500???

how i could return the presta at first version?? i have the last now 1,5,00

 

[vekia]

if you've got internal server error 500 you should turn on error reporting. You will see where the problem exactly occur then.

 

open: config/defines.inc.php

 

find this line

define('_PS_MODE_DEV_', false);

 

change to look like this:

define('_PS_MODE_DEV_', true);

 

 

 

ps. what is smtghg?

[MrConstantine]

i have done that and i have more errors

[El Patron]

i have done that and i have more errors

 

you need to post those errors, as this was why vekia had you turn on error reporting.  Don't be shy, using your favorite search engine search for 'prestashop (your error)'...try to leave out your website path in the search and focus on the ending error portion.

[manu.kumar]

I have same problem using PS ver 1.6.0.8 

error index.php?fc=module&module=cashondelivery&controller=validation and Cart cannot be loaded or an order has already been placed using this cart please suggest solution

[handycase.ch]

Hi. My english is not as well but i try to explain you what kind of problem i have. i get on each order the error: Cart cannot be loaded or an order has already been placed using this cart.

 

I read a lot in internet but nothing helps . i hope you can help me.