It also looks like my Panasonic DMP BD60 doesn’t have the proper firmware support to play iso image files either. I’ll try figuring out if it needs an update or not.
This has me concerned about your method. Are you saying that your disc has an ISO file on it? Like you put the disc in and then mount the ISO and play that in VLC? You need to burn the image to disc.
See my post on the previous page for more info - this is what I thought might be happening. It’s not a DRM/player issue, it’s the burning method (I think).