I'm getting an immediate crash when the client starts to load the entity spawns, here is the error

 

08:48:25] [Client thread/INFO] [Zero Quest]: Loading Entities and Ore Dictionary...

[08:48:26] [Client thread/ERROR] [FML]: Fatal errors were detected during the transition from INITIALIZATION to POSTINITIALIZATION. Loading cannot continue

[08:48:26] [Client thread/ERROR] [FML]:

mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized

FML{8.0.37.1325} [Forge Mod Loader] (forgeSrc-1.8-11.14.1.1325.jar) Unloaded->Constructed->Pre-initialized->Initialized

Forge{11.14.1.1325} [Minecraft Forge] (forgeSrc-1.8-11.14.1.1325.jar) Unloaded->Constructed->Pre-initialized->Initialized

zero_quest{v1.4.0} [Zero Quest] (bin) Unloaded->Constructed->Pre-initialized->Errored

[08:48:26] [Client thread/ERROR] [FML]: The following problems were captured during this phase

[08:48:26] [Client thread/ERROR] [FML]: Caught exception from zero_quest

java.lang.NullPointerException

at java.lang.Class.isAssignableFrom(Native Method) ~[?:1.8.0_25]

at net.minecraftforge.fml.common.registry.EntityRegistry.addSpawn(EntityRegistry.java:282) ~[forgeSrc-1.8-11.14.1.1325.jar:?]

at common.zeroquest.ModEntities.addSpawn(ModEntities.java:90) ~[bin/:?]

at common.zeroquest.ModEntities.loadSpawns(ModEntities.java:65) ~[bin/:?]

at common.zeroquest.ZeroQuest.load(ZeroQuest.java:109) ~[bin/:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]

at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:518) ~[forgeSrc-1.8-11.14.1.1325.jar:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]

at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]

at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:208) ~[forgeSrc-1.8-11.14.1.1325.jar:?]

at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:187) ~[forgeSrc-1.8-11.14.1.1325.jar:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]

at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]

at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118) [LoadController.class:?]

at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:692) [Loader.class:?]

at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:291) [FMLClientHandler.class:?]

at net.minecraft.client.Minecraft.startGame(Minecraft.java:521) [Minecraft.class:?]

at net.minecraft.client.Minecraft.run(Minecraft.java:356) [Minecraft.class:?]

at net.minecraft.client.main.Main.main(Main.java:117) [Main.class:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:85) [start/:?]

at GradleStart.main(GradleStart.java:45) [start/:?]

[08:48:26] [Client thread/INFO] [sTDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:660]: ---- Minecraft Crash Report ----

// I let you down. Sorry

 

Time: 3/1/15 8:48 AM

Description: Initializing game

 

java.lang.NullPointerException: Initializing game

at java.lang.Class.isAssignableFrom(Native Method)

at net.minecraftforge.fml.common.registry.EntityRegistry.addSpawn(EntityRegistry.java:282)

at common.zeroquest.ModEntities.addSpawn(ModEntities.java:90)

at common.zeroquest.ModEntities.loadSpawns(ModEntities.java:65)

at common.zeroquest.ZeroQuest.load(ZeroQuest.java:109)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:518)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)

at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:187)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)

at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:692)

at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:291)

at net.minecraft.client.Minecraft.startGame(Minecraft.java:521)

at net.minecraft.client.Minecraft.run(Minecraft.java:356)

at net.minecraft.client.main.Main.main(Main.java:117)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:85)

at GradleStart.main(GradleStart.java:45)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- Head --

Stacktrace:

at java.lang.Class.isAssignableFrom(Native Method)

at net.minecraftforge.fml.common.registry.EntityRegistry.addSpawn(EntityRegistry.java:282)

at common.zeroquest.ModEntities.addSpawn(ModEntities.java:90)

at common.zeroquest.ModEntities.loadSpawns(ModEntities.java:65)

at common.zeroquest.ZeroQuest.load(ZeroQuest.java:109)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:518)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)

at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:187)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)

at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:692)

at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:291)

at net.minecraft.client.Minecraft.startGame(Minecraft.java:521)

 

-- Initialization --

Details:

Stacktrace:

at net.minecraft.client.Minecraft.run(Minecraft.java:356)

at net.minecraft.client.main.Main.main(Main.java:117)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:85)

at GradleStart.main(GradleStart.java:45)

 

 

 

And here is what I have in my code

	   public static void loadSpawns(){
       	addSpawn(EntityZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.bioZone, ModBiomes.nileSavanna, ModBiomes.nileSavannaPlateau, ModBiomes.nileSwampland, ModBiomes.pinkZone);
       	addSpawn(EntityRedZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.redSeed);
       	addSpawn(EntityDestroZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.destroZone, ModBiomes.destroZoneHills);
       	addSpawn(EntityIceZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.blueTaiga, ModBiomes.blueTaigaHills, ModBiomes.blueColdTaiga, ModBiomes.blueColdTaigaHills);
       	addSpawn(EntityForisZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.nileJungle, ModBiomes.nileJungleHills, ModBiomes.nileJungleEdge, ModBiomes.nileSwampland);
       	addSpawn(EntityMetalZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.walRockland);	 
       	addSpawn(EntityJakan.class, 100, 2, 3, EnumCreatureType.CREATURE, ModBiomes.walRockland);
       	addSpawn(EntityKortor.class, 100, 2, 3, EnumCreatureType.CREATURE, ModBiomes.nileSavanna, ModBiomes.nileSavannaPlateau, ModBiomes.nileJungle, ModBiomes.nileJungleEdge, ModBiomes.nileJungleHills);
       	addSpawn(EntityRiggator.class, 100, 2, 3, EnumCreatureType.MONSTER, ModBiomes.bioZone, ModBiomes.nileSwampland, ModBiomes.nileMesa, ModBiomes.nileMesaPlateau, ModBiomes.nileMesaPlateau_F);
   if(Constants.DEF_DARKLOAD == true){
       	addSpawn(EntityDarkZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.darkWasteland);
       	addSpawn(EntityKurr.class, 100, 2, 3, EnumCreatureType.MONSTER, ModBiomes.darkWasteland);
   }
   
   }
   
	public static void addSpawn(Class entityClass, int weightedProb, int min, int max, EnumCreatureType typeOfCreature, BiomeGenBase... biomes){
		EntityRegistry.addSpawn(entityClass, weightedProb, min, max, typeOfCreature, biomes);
	}

The entity registry method, I had moved the method so that you can see which methods are causing the problem

addSpawn(EntityZertum.class, 100, 4, 5, EnumCreatureType.CREATURE, ModBiomes.bioZone, ModBiomes.nileSavanna, ModBiomes.nileSavannaPlateau, ModBiomes.nileSwampland, ModBiomes.pinkZone);

It's after it's registered

    	ModEntities.loadCreatures();
    	ModEntities.loadOthers();
    	ModEntities.loadSpawns();

 

--EDIT---

I just noticed that there's a method that registers some more entities after the spawns are loaded, and now it works now (and spawning the entities also). Thanks!