I have M3P with the Pro controller. I upgraded to v.14 but the histogram was not working cotrectly so I rolled back to v.13.9. Then later on I upgraded to 15.0. Histogram was working fine but the camera and video settings sometimes disappeared from the bottom right corner and I could not change any parameters. So I rolled back to 13.9 again. I made a pledge to never upgrading again unless something really worthy is added. Is there anything in v. 15.8 worthy upgrading?