What's up! I recently updated my photoshop version to the newest version which is the 24.1. I ran into this problem where I couldn't select and mask a person out from another photo. Every time I try to select and mask, the whole software crashes. It happens every time I get to that point. I looked all over on the net for tutorials or even trying to find what's wrong with it and there was nothing that can help.
What fixed the problem was, I had to revert it back to the 22.2 version and now it's working perfectly now! Just in case you guys run into this problem, here's a solution that'll help you.