Thanks again. It seems like it's just been problem after problem. Based on what you've said, it sounds like the burn was just bad.
On the disc itself, I can't navigate to Special Features by menu, and I can't get to it by playing to the end of the timeline either. Within Encore, the preview works perfectly and has all of the correct settings.
I've been looking for software to play the ISO file, but I haven't found one that works properly. Are there any you'd suggest downloading (I can't believe I didn't mention this early, and it's incredibly stupid of me, but I'm using a MacBook Pro for all of this).
I had attempted using Aurora for the burn.