Hello,
I've also installed the 'Language/Currency Links in Header' from Neville Kerr and it doesn't work for me. I have the possibilities to select them in the admin/layout settings. When I set them on true thenmy website will only display the search field in the header en links for home and login.

Now I turned off the possibilities because I elso couldn't creat my website.

I hope someone can help me how to fix this.

Marco