DAvid, I have updated again and has been no problem. Excuseme for taking your taime fus such a stupid thing but I disabled all the plugins and I could not know the reason and that is why I worte you.
I do not forget thar as soon as I know anything about the Ajax in the xforwoocommerce search, I must let you know. perhaps you do not remember what was the problem but do not worry, when I let you know I will refresh your memory (if you do not remember right now)
Thanks an a big hug