I discovered this problem with a custom converter, but it turns out it's global problem.
In the stack trace below the field 'test' is: 'public String test = null' It's never used in the plugin.
NB: I haven't tested this without sections.
15:42:58 [SEVERE] Error occurred while disabling RegionSpawn v1.0-SNAPSHOT (Is it up to date?)
de.cubeisland.engine.configuration.InvalidConfigurationException: Error while saving Configuration!
at de.cubeisland.engine.configuration.codec.MultiConfigurationCodec.saveChildConfig(MultiConfigurationCodec.java:74)
at de.cubeisland.engine.configuration.MultiConfiguration.saveChild(MultiConfiguration.java:63)
at de.cubeisland.engine.configuration.MultiConfiguration.save(MultiConfiguration.java:162)
at de.cubeisland.engine.configuration.Configuration.save(Configuration.java:227)
at de.cubeisland.devs.regionspawn.RegionSpawn.onDisable(RegionSpawn.java:109)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:219)
at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:481)
at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:400)
at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:393)
at org.bukkit.craftbukkit.v1_6_R2.CraftServer.disablePlugins(CraftServer.java:277)
at net.minecraft.server.v1_6_R2.MinecraftServer.stop(MinecraftServer.java:343)
at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:450)
at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: de.cubeisland.engine.configuration.InvalidConfigurationException: Error while converting Section into a MapNode!
Path: test
Section: class de.cubeisland.devs.regionspawn.config.InternalsConfig
Field: test
at de.cubeisland.engine.configuration.InvalidConfigurationException.of(InvalidConfigurationException.java:53)
at de.cubeisland.engine.configuration.codec.ConfigurationCodec.convertSection(ConfigurationCodec.java:387)
at de.cubeisland.engine.configuration.codec.MultiConfigurationCodec.convertSection(MultiConfigurationCodec.java:262)
at de.cubeisland.engine.configuration.codec.MultiConfigurationCodec.saveChildConfig(MultiConfigurationCodec.java:70)
... 12 more
Caused by: java.lang.NullPointerException
at de.cubeisland.engine.configuration.node.MapNode.setExactNode(MapNode.java:103)
at de.cubeisland.engine.configuration.node.ParentNode.setNodeAt(ParentNode.java:44)
at de.cubeisland.engine.configuration.codec.ConfigurationCodec.convertSection(ConfigurationCodec.java:383)
... 14 more
I discovered this problem with a custom converter, but it turns out it's global problem.
In the stack trace below the field 'test' is: 'public String test = null' It's never used in the plugin.
NB: I haven't tested this without sections.