DVD error tester for NEC 2510

Hello everyone,
Just bought this drive and love it. My problem is I can’t check for Pi errors and failures of my disks. I tried using Disc Quality test program of Nero CD/DVD speed but after the initial ‘spin up’ I get an error " Error initialising test".
The program works with the speed test and detects all disks.
I’ve tried that Liteon software but even though it detects my drive it will not test my disks. (Even bought movie DVD’s).
I’d appreciate any advice I can receive.
Alfster :wink: