I have started to have another problem with Nero, failed to create empty document, then after searching, ended-up to this site and suggestion of conflict between Daemon Tools Pro and Nero 8.

I have reset Nero 8 and problem with failed to create empty document gone. Started to think of my problem with reading multi session DVD and this tread. I have removed Daemon Tools Pro and tried Nero 8, it is reading Multi session DVDs again.

Since I use Daemon Tools and Nero, had to remove the pro version that cause problem with Nero and install regular version. Now they are fine together