Ok, I have checked both suggestions... the callback file as well as the error log files.

The 2Checkout callback file seems to be ok, it has a whole bunch of  $this> entries relevant to checkout.

And then, the below is a prevalent error that pretty much has filled the file:

2013-05-13 17:07:37 - warning:  AbanteCart core v.1.1.4 Invalid argument supplied for foreach() in <b>/users12/domains/pen-ink-refills.eu/web/shop/core/lib/menu_control.php</b> on line <b>110</b>

Unfortunately, I am not tech savvy in php and am not sure what all of that means.   

Elli

Hello AbanteCart users/developers,

I recently installed the latest AbanteCart Cart version 1.1.4 and it was a breeze setting it up etc.
Overall, I love the cart, now I just need some help smoothing out the problem areas.

I have noticed today, that orders don't seem to get captured. It captured me as a "customer",
but there is no record of my order in the Admin.

Any idea what might be causing this? 

Thank you for any help and tips you might have.

Elli