Problem Backups

[ps2666]

Has anyone had any problems backing up The Two towers or Time Crisis 2?

Ive tried recordmax and primo for these but cant get them to work.

Ive got a Pioneer 105 (a05)
dvd-r generic media (have used these fine for two other games)
PS2 v1 with Mesiah2pro (i think the guy said something about an f14)

Ive only backed up 4 games so far and two have worked (dark alliance and devil may cry) and the above two havent.

Any ideas??????