zen-cart-v150-full-release
The site is new and have not been updated for a week or so.
I installed it with Filezilla, and everything works (almost)
I'm using DIBS payment solution

I've look in the FAQs but I cant find any solutuion to this specific problem.

My Shop works great with ZenCart. I can sign up and if I order things I get all information needed and so on.
The problem with my shop is that I can't buy really buy anything. When I'm at step 2 of 3 in the Chekout part, and trying click "Continue Checkout" I get this error message:



The DIBS solution I installed on the site is "DIBS_ZenCart-1.3.9-06"
Can this maybe be the problem?

I've configured this when logged in at my Zen cart (Payment Modules)

DIBS Payment Services (Credit Card) dibs (Green dot(/Default)

This is my settings when I edit:

Merchant ID: ********
Enable Test Mode: *Yes*
Enable Callback: *Yes*
DIBS Callback session configuration: *No*
Skip last page? *Yes*
Calcfee: *No*
FlexWinLanguage: *Auto*
Are you sending unique Order ID to Payment Gateway?: *No*
Capture now: *No*
PayByBill - Create invoice now: *No*
PayByBill - Distribution type: *No*
FlexWin Color: *Blue*
Pay Type: *VISA,MC,AMEX*
Logo(s): *VISA,MC,AMEX*
Are you using 3-D Secure? *No*
Logo Size: *Med*
Payment Zone: *--none--*
Sort order of display: *o*
Set Order Status: *default*
MD5K1: *****....
MD5K2: *****....

I appreciate all help and suggestions helping me to fix this error.
This is the first time I've tried to build a E-shop.
Thank you