Dumb luck finding this post right away. I just started using dyndolod, so I need to do more learning. But I had to post, that I have this same problem. I also have majestic mountains, I don’t have better dyn snow. It’s a missing texture on the MM LODs, I think. I gotta figure out how to figure out what texture it is and plug that hole. I’m sure I’ll have to use xEdit and get some coords, but I haven’t really started troubleshooting yet. I just wanted to let ya know I too am seeing this.