NFS Underground backup

[SteveTNB]

I've been trying to make a backup copy of my Need For Speed Underground but after making a copy it doesn't seem to work on my PS2.

It is a PAL version of the original disc and my PS2 has a Messiah modchip.

The backup was made using an MSI DR-4A DVD/CD re-writer on a '-' disc using Nero 5. I've done other backups which have worked just fine using the same brand of discs and setup?