Seems it's caused if a client joins a sector with not a single entity in there, stick shops don't count.
Easy to reproduce if you turn off NPC factions entirely (setting max NPC count to 0) and generating a new world. Needs some luck as you may get a station up close.
You can't get this issue with a local build, not sure if it's fixed already in there or because the setup just doesn't trigger it. Use the pre-build version and do a local world.
```
[2017-12-28 15:26:18] java.lang.RuntimeException: HP Triggers(Reactor) missing
[2017-12-28 15:26:18] at obfuscated.ais.a(SourceFile:59)
[2017-12-28 15:26:18] at obfuscated.ajj.h(SourceFile:213)
[2017-12-28 15:26:18] at obfuscated.ajj.a(SourceFile:536)
[2017-12-28 15:26:18] at obfuscated.aiY.updateLocal(SourceFile:3005)
[2017-12-28 15:26:18] at obfuscated.ajp.updateLocal(SourceFile:414)
[2017-12-28 15:26:18] at org.schema.game.common.controller.EditableSendableSegmentController.updateLocal(SourceFile:1122)
[2017-12-28 15:26:18] at obfuscated.ajG.updateLocal(SourceFile:601)
[2017-12-28 15:26:18] at org.schema.game.server.controller.GameServerController.update(SourceFile:1366)
[2017-12-28 15:26:18] at org.schema.schine.network.server.ServerController.run(SourceFile:275)
[2017-12-28 15:26:18] at java.lang.Thread.run(Unknown Source)
[2017-12-28 15:26:18] [SERVER] Exception catched
```
{F26189}
World I used, join as "Lancake" although it shouldn't matter.
{F26190}