cpw.mods.fml.relauncher.ReflectionHelper$UnableToAccessFieldException: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindFieldException: java.lang.NoSuchFieldException: isJumping
    at cpw.mods.fml.relauncher.ReflectionHelper.getPrivateValue(ReflectionHelper.java:121)
    at fairies.entity.EntityFairy.func_70071_h_(EntityFairy.java:333)
    at net.minecraft.entity.Entity.func_70098_U(Entity.java:1579)
    at net.minecraft.entity.EntityLivingBase.func_70098_U(EntityLivingBase.java:1853)
    at net.minecraft.world.World.func_72866_a(World.java:2066)
    at net.minecraft.world.World.func_72870_g(World.java:2034)
    at net.minecraft.world.World.func_72866_a(World.java:2129)
    at net.minecraft.world.World.func_72870_g(World.java:2034)
    at net.minecraft.world.World.func_72939_s(World.java:1887)
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2006)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
    at net.minecraft.client.main.Main.main(SourceFile:148)
    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:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
    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:497)
    at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:310)
    at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:395)
    at org.multimc.EntryPoint.listen(EntryPoint.java:170)
    at org.multimc.EntryPoint.main(EntryPoint.java:54)
Caused by: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindFieldException: java.lang.NoSuchFieldException: isJumping
    at cpw.mods.fml.relauncher.ReflectionHelper.findField(ReflectionHelper.java:94)
    at cpw.mods.fml.relauncher.ReflectionHelper.getPrivateValue(ReflectionHelper.java:117)
    ... 26 more
Caused by: java.lang.NoSuchFieldException: isJumping
    at java.lang.Class.getDeclaredField(Class.java:2070)
    at cpw.mods.fml.relauncher.ReflectionHelper.findField(ReflectionHelper.java:85)
    ... 27 more