**Update to this post... It appears that it's not necessarily the Diamond shape that is causing the issue. Since the most recent update, ANY shape that crosses the line into the "No Cut Zone" can cause DS to pitch a fit and stall. Beware of the No Cut Zone! **
Also.... the PS half circle end cap doesn't cut all the way around. I skips a spot in the middle. Not sure why. I've had to go back and add little cut lines in the center of my PS endcap cut lines to fix this.