Hi, thanks for your reply. I confirm that does not work well ... I tried all waves will possible variants, after erasing the internal cache from the administration of Joomla, browser cache ... I tested in three modes, increasing the amount of products + Enter, increasing quantity of products with the + - (+ Enter), increasing the amount of product + Add Cart, and in any case it works, I only increases the amount of 1 + 1 ... that is, number 1 product every time I add the cart ... it is a very serious problem, because in an E-Commerce, does not operate well the shopping cart, you've played the possible sale ... Any possible solution ?, * I must tell you that Quark Template to Unlike other Templates Gavick, has too many unresolved issues, the point that in my case, the project seems endless ... thanks, greetings from Italy. René
* Regarding the possibility of a cache problem, I must say, they are always technical problems as you know the end customer is not always able to be understanding ... I use VirtueMart 2 and 3 years, and this type of problem no has ever presented, for that reason, I am 100% sure that this is a compatibility problem with Quark ... I hope my idea of the problem can be useful to everyone, thank you. René