I preferred to buy physical, but afforded myself just the download. guess what? It got stuck and before it automatically restarted my computer, I saw an error message, though I couldn't read it in time. unless you close the movie, then the program and restart.
Now the project is here, PS24 is installed, and the crashes are unbelievable! Clips lock in place and won't move, rendering just stops and doesn't restart.
I upgraded from 22 to 24 because I have long waited for masking.