So far after about a week with your “fix,” Antonio, it’s been working. I’ve only had one crash, but it wasn’t a video service issue (at least no warning popped up). I’ve switched between video projects all day and not had one lock up. Nice going. I wound up copying the N6 app and renaming it “Nuendo 6 Improved.” I replaced that videoengine.bundle. So now in my dock I have Nudendo 5.5, Nuendo 6, and Nuendo 6 Improved. Choices, choices.