Problème avec des mobs

Bonjours , cela fait 2 heures que je cherche comment lancer mon launcheur avec le mod pixelmon mais quand j'appui sur play le launcheur ce lance mais il se freez et reviens sur la page de demarrage et m'affiche ceci:---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 03/09/16 19:33
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: com/pixelmonmod/pixelmon/worldGeneration/structure/util/GeneralScattered
at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:186)
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:790)
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:322)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:520)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.NoClassDefFoundError: com/pixelmonmod/pixelmon/worldGeneration/structure/util/GeneralScattered
at com.pixelmonmod.pixelmon.worldGeneration.structure.StructureRegistry.registerTownStructure(StructureRegistry.java:339)
at com.pixelmonmod.pixelmon.worldGeneration.structure.StructureRegistry.registerStructures(StructureRegistry.java:94)
at com.pixelmonmod.pixelmon.RegistryHelper.init(RegistryHelper.java:82)
at com.pixelmonmod.pixelmon.Pixelmon.init(Pixelmon.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
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:239)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:217)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
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:142)
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:788)
... 10 more
Caused by: java.lang.ClassNotFoundException: com.pixelmonmod.pixelmon.worldGeneration.structure.util.GeneralScattered
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 41 more
Caused by: java.lang.OutOfMemoryError: Java heap space
at java.util.jar.Attributes.<init>(Attributes.java:84)
at java.util.jar.Attributes.clone(Attributes.java:291)
at sun.net.www.protocol.jar.URLJarFile.getManifest(URLJarFile.java:155)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:147)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.pixelmonmod.pixelmon.worldGeneration.structure.StructureRegistry.registerTownStructure(StructureRegistry.java:339)
at com.pixelmonmod.pixelmon.worldGeneration.structure.StructureRegistry.registerStructures(StructureRegistry.java:94)
at com.pixelmonmod.pixelmon.RegistryHelper.init(RegistryHelper.java:82)
at com.pixelmonmod.pixelmon.Pixelmon.init(Pixelmon.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
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:239)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:217)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 1731016 bytes (1 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.32 Powered by Forge 12.18.1.2076 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHI mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHI FML{8.0.99.99} [Forge Mod Loader] (forge-1.10.2-12.18.1.2076.jar)
UCHI Forge{12.18.1.2076} [Minecraft Forge] (forge-1.10.2-12.18.1.2076.jar)
UCHE pixelmon{5.0.0-beta7} [Pixelmon] (Pixelmon-1.10.2-5.0.0-beta7-universal.jar)
Loaded coremods (and transformers):




j'ai installer forge et la version du mod Normalement je ne comprends Help please