I was having the error “cart empty” when it redirects to the Paypal’s site, I tried modifying the module files with no luck. I searched over the Prestashop forums on how to make the Paypal module work, or an alternative module for Paypal integration with Prestashop. Here are some solutions I tried:

• Changed the permissions on the Paypal module directory (/prestashop/modules/paypal) to 777 – did not work
• Code modifications to the Paypal module, and even the sources of the Prestashop installation – did not work either

Then I tried this modified Prestashop Paypal module here, and surprisingly it worked like a charm! Here were the steps I did to install the working Paypal module for prestashop:

• Uninstalled the Paypal module from the Prestashop back office
• Deleted the files inside the paypal module folder
• Uploaded the modified module to the paypal folder
• Installed the paypal module from the back office
• Tried it out with some Paypal sandbox accounts
• Done!

We were using PSBill before for our transactions, but now it doesn’t allow Mastercard transactions anymore for businesses that do not have permits from Europe (not sure what country) so we had to use Paypal as a payment option.

Thanks to eCartService.net for the great Paypal module! And also to the Prestashop community! I love open source!

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1. Log into your back office, then go to Shipping tab
2. Choose Carriers at the options below the tabs
3. Click Add New
4. On the Company field, put a name (for this case we’ll use “Shipping Hack”), fill in the Transit time field, and make sure the Status is set to the green check, then click Save.
5. You should go back to the Carriers page. At the Carrier options, choose “Shipping Hack” (or whatever name you gave to the newly created carrier) as default carrier, and click Save.
6. Click again on the Shipping tab
7. At the Fees field, select “Shipping Hack”
8. At the Handling field, Set “Handling charges” and both “Free shipping starts at” fields to 0 (zero), then click Save
9. Click Carriers again
10. Click on “Shipping Hack” and set the Status to the red X, then Save
11. Once you go back again to the Carriers page remember NOT TO click Save again on the Carrier options field

If you do this correctly, no shipping price would be added to the Shopping Cart Summary page in Prestashop until the customer chooses a carrier at the Shipping stage of payment.

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