I was just tinkering to see what would happen. I figured I wasn't supposed too. I usually do my morphing work in Lightwave. Lightwave is a far more expensive program and I crash it all the time with the rounding tool. I have a Hot Rod like mentality with software and computers. I do it just to see what happens sometimes. I would think an error message would pop up rather than the program crash and in Lightwave I usually get a message that windows is sorry but the program has to close and when I click OK it doesn't matter how much work I lose, it closes and there's no way around it. Saving often no matter what software you're in is wise. They don't tell you in the manuals what happens if you screw up. You learn it from the school of hard knocks.