Bilingual menu issue

Hello!
I created http://publicitad.com using theme version 1.1
Last week I downloaded the update for version 1.3 and everything was replaced with the themes dummy content. So I reinstalled version 1.1 (thanks backup!).

Now the problem is the menu in English. I’m using WPML plugin and it’s working fine for the entire website. But when I try to create my menu un English, I get a 404 when saving.

The menu appears on the English homepage, but it’s not there on any other page.

Please help!