Thanks for your responses. I will try to describe in more detail about our case so that you can comment on the cause of the problem.I continue to have challenges with our Kentico site. It is not a form or content site, more of a Merchant Site. So what happens is the customer goes through the process of purchasing something and at the end when things are ready, they are suppose to client the purchase button. I check everything with a couple of 3rd parties and then I send a success page and a can't process page. The can't process page because your payment was not sufficient is returning blank. The customer does not see why they did not succeed and are left confused as to what happened. I know of this because they are contacting the Merchant Store. Additionally, I are not able to capture this event as it does not show up in a Log and I are not able to recreate this event since it only happens on the live site. I did confirm that if you have two browsers open and push go at the dame time, there is a blank page that gets published. (I have since rectified that issue and are patching.) But I are unsure that will solve the problem since most people are not running two browsers and trying to submit the same thing twice. Thanks!I hope to receive help from you