Rugby League 2 Backup

[evan]

I have a mod chipped V8 PS2 and have recently purchased Rugby League 2. The original game won't load anything past the "renderware" srceen. I have tried a back up disc of the game and find that the game freezes at the selection menu. The only way I can get the game to work is the put in the original game, press reset, when it freezes swap to the back up disc the it loads and run correctly. Any suggestions on the solution.