cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: forestry/core/config/ForestryItem
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:744)
	at cpw.mods.fml.server.FMLServerHandler.finishServerLoading(FMLServerHandler.java:97)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStarted(FMLCommonHandler.java:324)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:287)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:631)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: forestry/core/config/ForestryItem
	at com.bymarcin.zettaindustries.mods.forestrybackpacks.ForestyBackpacksMod.addRecipe(ForestyBackpacksMod.java:84)
	at com.bymarcin.zettaindustries.mods.forestrybackpacks.ForestyBackpacksMod.postInit(ForestyBackpacksMod.java:66)
	at com.bymarcin.zettaindustries.modmanager.ModManager.postInit(ModManager.java:96)
	at com.bymarcin.zettaindustries.ZettaIndustries.postInit(ZettaIndustries.java:83)
	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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532)
	at sun.reflect.GeneratedMethodAccessor3.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 cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
	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 cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:742)
	... 5 more
Caused by: java.lang.ClassNotFoundException: forestry.core.config.ForestryItem
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 35 more
Caused by: java.lang.NullPointerException