X-Plane 10.50 beta 3 fixed a lot of big bugs – several crash bugs fixed, etc. It unfortunately also had a small problem where it wouldn’t start without blowing up. (This one got by us because it only happens at some airports, and it requires a clean release machine to see- it doesn’t happen on developer machines or some of the more heavily loaded installs that Jennifer tests with. The breaking change also went in late in the game, and thus missed screening.)
So we turned around beta 4, and if it’s unusable, I’ll have to reconsider my life choices. Crash Fixes!
You can read Ben’s whole XP10.50b4 story at this dedicated blog.