Fullwidth Portfolio

Hi there!
When I am editing a Portfolio Item is the same as when I´m editing a post, isn´t it? Then, can I link the Fullwidth Portfolio Item to the Portfolio Post ?
I´ve just tried it and that´s what I get:
The url: http://www.capeaventura.net/portfolio/vida-salvaje/ ‎
When I click on the item the url: http://www.capeaventura.net/portfolio/vida-salvaje/%20%E2%80%8E. So “Page not found” message.

What am I doing wrong?

Thanks