one lone spike appeared in the same area when i went all the way back to the 2nd save, the earliest one that contained the landmass as i wanted it. I changed a few more setting in the sun again and it disappeared? Even assuming that was the issue, why would changing a light setting cause the equivalent of adding fractal noise to the terrain. There are no transparencies being used over there to catch the light as a glitch. All appears to be fine in the pic now, im locking everything in the scene now completely in hope that will stop some random trouble to start again but i dont hold no great hope that ive isolated this issue.