Blank Page on swich language

Hello,
Hello guys, I have a strange error, on my Version 2.0.1.0.

I inserted two languages, English and Italian, but when I change language, OpenCart redirect me blank page with the following url: index.php?route=common/language/language ( BLANK page and no errors in Debug)

The blank page comes out only with Chrome and Firefox browsers, IE seems to work well.

does anyone know how to fix?

Thanks to all!

I found the problem, it was a free SEO extension that gave this problem. Once disabled, the languages they work properly.