[Plugin: Polylang] Problem with "pretty permalinks"

Hello!
I am using the polylang plugin on my site: livesportsweden.com.
It works great, except for one thing. Im trying to change the permalinks from the default value, ex. ?lang=sv to the postname for SEO. All the pages and posts work great when I change it except for the starting page.
It looks like this in default:
http://www.livesportsweden.com/?lang=sv

And like this when I use postname.
http://www.livesportsweden.com/sv
But here it doesn´t find the stratingpage. How can I adjust this?

Thankfull for help!

/Emilina

http://wordpress.org/extend/plugins/polylang/