Checkout error on address confirm step

Hello,

I recently began using hikashop for our start-up online store. The store was operating just fine until we moved the site to a new Virtual Private Server. Everything seems to work fine until checkout. The first step (confirming the cart) works fine. When we hit next to go to billing/shipping address, we get an internal server error. If I click on a step further down the line, it will go to that step, but stop because the address hasn't been filled in. I have played with the order of the checkout procedure and always get hung on the address part of the checkout. I have checked to make sure the users we are ordering with have valid addresses.

The site is CajunDaddyOnline.com, but isnt live yet. If anyone can help me, I would be happy to give access to the front and/or backend of the site.

Thanks in advance for any help!

I'm wondering if you got this to work. It happens when a user isn't logged in. I have reported it elsewhere but tried putting the code in path.php to remove the checkout path if they're not logged in.

Let me know what you discover.

Thanks!