Hi there...
I, too, am in the process of upgrading my clients' osCommerce installation from the ViaKlix module to the new Virtual Merchant module.
As far as I can tell, I installed and configured everything correctly; my clients' server supports cURL in PHP, and I'm pretty certain that I made all of the code changes correctly in all 3 files.
HOWEVER, when I try testing out the actual order process, everything works perfectly well right up until the final screen--where I get a Card Declined error message even when the card info is correct (I've tried it with both the test card info as well as 2 different live credit cards).
Any suggestions? It gives the same error with both Visa and MasterCard.
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