I just go this problem recently. Every time I try to open my recent campaign, my game crashes and it gives me the Fatal null message.
I've looked in the star sector log file, and this is what I got. I'd really like some help and guidance.
Spoiler
665894 [Thread-3] INFO
exerelin.campagin.ColonyManager -
Queued industry: grounddefenses, NEW
665895 [Thread-3] INFO
exerelin.campagin.ColonyManager -
Queued industry: orbitalstation_high, NEW
665895 [Thread-3] INFO
exerelin.wolrd.NexmarketBuildier -
Adding industries to market Asharu
665895 [Thread-3] INFO
exerelin.wolrd.NexmarketBuildier -
Picker is empty, skipping
665896 [Thread-3] INFO
exerelin.wolrd.NexmarketBuildier -
Adding industry class to picker:
Salvage Yards, priority 1,0, weight 1494.0
665896 [Thread-3] INFO
exerelin.wolrd.NexmarketBuildier -
Adding industry class to picker: No Industry, priority 1.0, weight 437.5