Need advise on creating a backup copy of NFL Gameday 2001 for PSX!!!!

[z-man]

Ok...I have only had problems once before backing up Medievil #1. I used CDRWIN 3.8 to backup NFL Gameday 2001 yesterday, and it appeared as if it was going to work fine. As soon as it got to the 2001 loading screen it failed and I received a black screen with a big RED CIRCLE with a line through it saying "Software Terminated, machine may be modified". With all the backup's that I've done, NEVER have I had something like that come up. I have a "Game Enhancer" to play my backups instead of a modchip. What in the world do I have to do in order to back this game up and have it not TERMINATE????????????????