I would focus on the crash before adding new content, but that's just me giving unsollicited advice ;-) Keep it up making the game better!
I am fully aware of how difficult software development can be, have been doing that for quite some years as well. Just wanted to emphasize that it is a crash with quite some impact, potentially driving people away from the game, so I would give it quite high priority, potentially over anything else. But you're right, I was putting myself on the devs chair a bit too much. Mea culpa ;-)