Not sure if this is the correct place to post this, but I have a feeling that my issue may be related to my payment module.

I am using ZenCart version 1.3.9b with a SecurePay payment module. I am able to complete transactions in both production and text mode. However the website hiccups after clicking on Conform Order and loads a blank page with the URL:

/store/index.php?main_page=checkout_process&RETURN_CODE=Y&RESPONSE_CODE=AA&AUTH_RESPONS E=Demo%20Approved,%20AVS%20=%20N,%20AppNum:%20123456&APPROV_NUM=123456&ZENID=bc2 76a3e2919843dfb0de9ceea7a6c71

The transaction goes through successfully and the customer receives an email conformation. But something is tripping up the page load and I can't figure out what is happening. Any ideas?