I too experience crashing upon saving my new scenes. I was going to suggest auto save too! I had copied drawings and cut them out to create a camera zoom effect. Upon playing back what I created and satisfied I saved the scene only to have it crash. All work lost. I use a Mac, Mojave 10.14 with a Radon Pro 580 8 Gig graphics card, 4.2 GHz i7 processor – if that helps.