simon_68

The tracking number has to be in order_carrier table, not in order table, than it works :)

Hi, same question as below, but for version 1.7. Is the solution the same as well? Thanks, Simon

Then the 100 % solution is the following: - do a fresh installation of prestashop to a test site, e.g. subdomain of you site or some other server - implement / copy functions, products and DB from your site to the test site step by step - observe the point when cart stops working and you'll locate the problem I seems complicated but was the only way for me and it didn't took me more then some hours.

Hi Libor, I've checked your site and the cart behaves exactly like mine did. My problem was problematic data in the ps_orders table as described above; after repairing it works bp.

Chris, unfortunately I'm not clever enough to write a script which will solve all the problems with cart. What you have to do is find illegal values in the table and columns I mentioned. And which values are illegal? This information you can get by comparing the data in some working demo DB or fresh installation DB and your DB with cart problems. Let us know about success!

Hosting panel, phpMyAdmin and some knowledge about sql

No problem, I can tell what specifically I had to do. I migrated the site including DB as well, together with old orders, and had to fix the following fields in ps_orders table: id_cart: there were values from 1 to 2000; set to 1 for all old orders payment: there was value "varies"; set to "PayPal" for all old orders, this is a currently valid payment method in my store conversion_rate: was 1000; set to 1 module: there was value "varies"; set to "paypal" for all old orders, this is a currently valid payment module in my store Hope it helps!

I'm not a specialist and I think it's hard to tell in general which values are right and which are wrong, you'll have to find this yourself. If you google, you'll find the ways how to correct those values. There is also another way that I used to locate the problem: - Install fresh prestashop in a test site, e.g test.yourdomain.com - If cart works correctly on fresh installation, copy production database to test site. If it stops working then, you'll know the problem in somewhere in DB. - Overwrite test DB with fresh data again and copy table group by table group from production DB and you'll locate the problematic table and data. Be careful, the above procedure is not explained in detail, and there is no guarantee that it will produce result. Anyway, maybe will give somebody an idea how to locate a problem on site, not only with empty cart. It worked for me...

The reason was bad data in those fields, type was ok.

I had exactly the same problem, solution that worked for me: my ps_orders table was partly corrupted, especially fields id_cart, payment, conversion_rate and module. When I corrected those, cart works perfectly.

Finally solved my problem ... the ps_orders table was partly corrupted, especially fields id_cart, payment, conversion_rate and module. When I corrected those, cart works perfectly.

Finally solved the problem ... my ps_orders table was partly corrupted, especially fields id_cart, payment, conversion_rate and module. When I corrected those, cart works perfectly.

Looks like there is no good solution for this problem, shall I report a bug?

I've tried this several times, together with cache clear on both sides and forced compilation, but unfortunately doesn't work for me. Ok, usually cart starts working after this for particular test or customer, but after some time, another customer complains that cart doesn't work.

I love ajax cart and would like to use it. If this is a known problem or bug, I'm wondering why developers haven't solved it yet. Or there are special circumstances when ajax cart works and when not? Tried today, cart doesn't work with ajax, switched ajax off, still doesn't work, switched ajax on and reloaded page (Ctrl+F5 in FO), cart starts working after some clicks to "Add to cart". www.lacepatterns.eu