Sanctuary causes a crash in extremely unstable version

[esranzarnath]

In the extremely unstable version the game crashes shortly after a sanctuary is built. reloading from save results in same crash after a few turns.

bd0e311 (HEAD -> quests, origin/quests) Playtesting
System: Windows 7 6.1 amd64

javelin/model/world/location/town/labor/religious/Sanctuary$UpǵradeSanctuary (class java.lang.NoClassDefFoundError)
javelin/javelin.model.world.location.town.labor.religious.Sanctuary.getupgrades(Sanctuary.java:96)
javelin/javelin.model.world.location.town.governor.Governor.gethand(Governor.java:145)
javelin/javelin.model.world.location.town.governor.HumanGovernor.manage(HumanGovernor.java:30)
javelin/javelin.model.world.location.town.governor.Governor.work(Governor.java:87)
javelin/javelin.model.world.location.town.Town.work(Town.java:225)
javelin/javelin.model.world.location.town.Town.turn(Town.java:211)
javelin/javelin.view.screen.WorldScreen.endturn(WorldScreen.java:255)
javelin/javelin.view.screen.WorldScreen.turn(WorldScreen.java:191)
javelin/javelin.JavelinApp.loop(JavelinApp.java:96)
javelin/javelin.JavelinApp.run(JavelinApp.java:81)
java.base/java.lang.Thread.run(Thread.java:833)

javelin.model.world.location.town.labor.religious.Sanctuary$UpǵradeSanctuary (class java.lang.ClassNotFoundException)
java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
javelin/javelin.model.world.location.town.labor.religious.Sanctuary.getupgrades(Sanctuary.java:96)
javelin/javelin.model.world.location.town.governor.Governor.gethand(Governor.java:145)
javelin/javelin.model.world.location.town.governor.HumanGovernor.manage(HumanGovernor.java:30)
javelin/javelin.model.world.location.town.governor.Governor.work(Governor.java:87)
javelin/javelin.model.world.location.town.Town.work(Town.java:225)
javelin/javelin.model.world.location.town.Town.turn(Town.java:211)
javelin/javelin.view.screen.WorldScreen.endturn(WorldScreen.java:255)
javelin/javelin.view.screen.WorldScreen.turn(WorldScreen.java:191)
javelin/javelin.JavelinApp.loop(JavelinApp.java:96)
javelin/javelin.JavelinApp.run(JavelinApp.java:81)
java.base/java.lang.Thread.run(Thread.java:833)