Add This To My Cart Not Proceeding

[CherVickers]

I am having the same problem with my site: www.prowoodfingerboards.com.
PHP Version: 5.5.28 (Zend: 2.5.0)

Any other things I can check?

[mc12345678]

I am having the same problem with my site: www.prowoodfingerboards.com.
PHP Version: 5.5.28 (Zend: 2.5.0)

Any other things I can check?

Say that same problem, but also same ZC version? If anything equal to or less than ZC 1.5.3 then problems are expected with PHP 5.5. If any ZC version less than 1.5.4, would suggest an upgrade anyways. Please advise with at least equivalent information already provided by the OP preferably with answers to the standard posting tips... They really cut down on the guess work for you and others with similar problems.

[CherVickers]

Say that same problem, but also same ZC version? If anything equal to or less than ZC 1.5.3 then problems are expected with PHP 5.5. If any ZC version less than 1.5.4, would suggest an upgrade anyways. Please advise with at least equivalent information already provided by the OP preferably with answers to the standard posting tips... They really cut down on the guess work for you and others with similar problems.

Yes. My bad.
I have ZC version: v1.5.4)

Not sure how long this has been an issue. I had a customer tell me something a few weeks back and thought it was a fluke. But heard again today. When I add a first item to the cart myself, it is fine. When I add a second item and click add to cart, the page acts as if it is adding to the cart for a second but then I am simply being returned to the item page and my item count in the cart remains at '1'. I did my upgrade to 1.5.4 with the help of a developer a few months back. I do have CEON url installed.

I am not a developer.

[mc12345678]

Does the problem continue if you return to the default template (temporarily after switching to also clear cache/sessions)?

Have you gone back to the developer as well?