proceed to checkout button doesn't work

Hello
I’m trying to set up your menucart to work with my jigoshop ecommerce that I have set up. My only question is that when im on the cart page, and I click on “proceed to checkout” it goes into an infinite loop and is not able to complete the request, even though the page at URL linked by the proceed to checkout button does exist.

When i click proceed to checkout its supposed to go to page but it locks up and doesn’t work.
If i type the url in in the address bar myself then it works fine.

my site : http://www.klimox.com/

https://wordpress.org/plugins/woocommerce/