NMI Gateway problem?

[Blackboot]

Have an account through Merchant One, and NMI is apparently who processes their transactions. Neither of their tech support people are any help, so I guess I'm down to the community to get some help.

Running gateway_services_cc credit card module for payment. All was entered correctly. I have two options in my zen-cart checkout, credit card, or check/money order. When I place an order with check, everything works normal, and it goes to my order success page like it should. I get the normal email telling me what I ordered, and my zen-cart admin area can see the order placed. When I place with credit card, after submitting, it does not go to order success, instead it goes to a white screen with nothing on it. As I place the order, it appears to start going through the api, but then leaves me with:

index.php?main_page=checkout_process&response=3&responsetext=Duplicate+transacti on+REFID%3A113440987&authcode=&transactionid=&avsresponse=&cvvresponse=&orderid= &type=sale&response_code=300&username=xxxxxxx&time=20101008224206&amount=1.06&ha sh=203f25915abb7eac8dd3805e1ad91c9d

Here's the kicker.....it does NOT update the order in zen-cart. The order stays in the shopping cart, and I can see no new order in my admin area. However, the credit card gets processed through NMI, and the customer is billed. So, somewhere, it's getting hung up.

Anyone have any suggestions?

Thanks,

Boot.

[kobra]

instead it goes to a white screen with nothing on it.

https://www.zen-cart.com/tutorials/index.php?article=82

[Blackboot]

Thanks for the quick response. I forgot to mention that I have already tried reloading all the define-order-success files, and when that didn't work, reloaded the entire thing.

[Blackboot]

I have now reinstalled everything, with a fresh download of Zen-Cart. I have also tried BOTH methods for error catching. NOTHING. Anyone else have any ideas?

Thanks again,

Boot.

[DrByte]

"hash=xxxxxxxxxxx" is a parameter that's frequently used as an exploit point by hackers. As such Zen Cart traps it and prevents the page from doing anything when &hash= is in the URL. That's why you're getting a blank page.

Better to rewrite the module to do background communications instead of redirecting the customer to another site ... unless that's all the module is capable of doing, in which case you'll have to get creative.

[Blackboot]

Thanks Doc. My problem would start with the fact that I have no clue how to begin to right the module so it does background calculations. However, then I wonder, since this combination that I'm using has been used by others, what did they do? Did it work for them? Why can't my NMI tech support help me at all on this? Just frustrated that a module supplied by NMI that is supposed to work in Zen-Cart, just doesn't.

Boot.

[NMI-Support]

Hi Blackboot,

We would be more than happy to assist you as we are familiar with what you are describing and can offer a work-around.

Please call me directly at 847-352-4850x101.

Thank you.

[DrByte]

What is your workaround?

[NMI-Support]

DrByte,

Our work-around is utilizing a module that does not use our "hashing" authentication methodology.

We can also use a more traditional authentication mechanism. (i.e. user/pass)

[DrByte]

Great. Using more contemporary technology is the better solution.