I did a manual update from Oscommerce to prestashop 1.6. I have all categorie and for a reason I dont't understant two categories are not accesible, when I change the value of the nleft and nright for a wrong value 430 and 431 for all the two categories and under categroies, the categories are access.
I don't understant why that's don't work even if I define good value for categories ans under categories, or if I use the module generate tree.
ARe there a limit or a limit in conf system for the numbres of elements ( I have 257 categories).
I thank you all and I hope you could be able to help me.