working on a documentary now and I'm using a PowerMac G5 OS 10.4.11 and using toast 8.
I've been making Blu-ray data-dvd backups of my video files.

Have occasionally (sporadically) had problems with the discs.
Note that the disc burns and verifys as correct.
However, when I try to copy files from disc to desktop/hard drive/or anywhere, files will not copy.

Files will open and play, they are still accessable in this manner. But copying? forget it.

Does anyone know what might even cause this? I'm uncertain why it even happens.
Is there a box that i can check/uncheck to prevent this?
has it happened to anyone else?
thanks for any help you may offer.