I ran into a bug tonight where at some point in my game EVERYTHING in my shipyard screen is gone. All ship types are deleted, and there are zero hull types, zero engine modules, zero weapons, defenses, etc. All modules of all types are gone. Oddly enough I can still build any of the ships that I initially designed when I started the game even though they are no longer present in the shipyard but I can't create any new ship types. This also appears to be affecting combat because the game will still play until I enter combat with anything but at that point the game crashes.