New payment gateway/module doesn't show

[fbas]

[sOLVED] The demo code in the link that I based my code on specifically doesn't process for downloadable products. I was coincidentally and specifically testing WITH a downloadable product. The solution was to comment out the code that checks for downloadable products and returns falls in the hookPayment

 

 

------------ ORIGINAL BELOW ----------

I created a new Payment Gateway plugin following this tutorial http://www.techietips.net/Creating-Simple-PrestaShop-Payment-Module.htm with a few minor changes to suit my needs.

 

The module is installed, enabled, etc, looks good on the back office side.

 

I tested it and made several test orders with it. It worked just as expected. Ordered that used it still show the info added to the Invoice page on the back office.

 

But now, for reasons I haven't figured out, the payment option no longer shows up during checkout.

 

How can I go about debugging this process to see why my module is not being included? Is there a way to log debug comments to the system? Or should I have php output to an external debug text file?