I have now tried a number of times with this, and seem to get a different error every time.
the only way i can get any error message is to dump the session onto the transaction failure page
<?php var_dump($_SESSION); ?>
i have tried adding the appropriate bundings to the transaction failure page, but nothing gives me an error.
i am continaully getting the error message i reported. i have reinstalled ecart twice, and the problem recurs
the latest error I got is
The totals of the cart item amounts do not match order amounts
which is ridiculous, (and incorrect).