Hotfix (0.15.0.18) for nulls and other issues reported in Fire in the Hold — Ostranauts Steam update #524400

Hey Folks! This is another hotfix (0.15.0.18) which addresses some more issues reported by players in our recent Fire in the Hold update. Specifically: Docking to a space station with another of your ships already docked there should no longer suffocate them instantly. NAV station orbits should no longer be invisible. Ceres plot should no longer end abruptly due to a missing encounter. Using the skills/traits part of character creation extensively, and then undoing it, should no longer cause a null. Several null reference fixes in the NAV and Docking/COMMS UIs. The hallway conduit tutorial should no longer break if you leave the map and return mid-tutorial. Particles spawned in gas exchanges should no longer cause null exceptions. Saves started in 0.15.0.0 and later should be compatible. Let us know if you give this patch a shot, and if it helps! We'll continue to work on fixes and polis...