TestInstance Crash

[15:42:24] [Server thread/ERROR] [FML]: A fatal exception occurred during the server about to start event
cpw.mods.fml.common.LoaderException: java.lang.NoSuchMethodError: stanhebben.zenscript.value.IAny.as(Ljava/lang/Object;)Ljava/lang/Class;
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:162) ~[LoadController.class:?]
	at cpw.mods.fml.common.Loader.serverAboutToStart(Loader.java:810) [Loader.class:?]
	at cpw.mods.fml.common.FMLCommonHandler.handleServerAboutToStart(FMLCommonHandler.java:273) [FMLCommonHandler.class:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:91) [bsx.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [?:?]
Caused by: java.lang.NoSuchMethodError: stanhebben.zenscript.value.IAny.as(Ljava/lang/Object;)Ljava/lang/Class;
	at InspirationScript.__script__(InspirationScript.zs:67) ~[?:?]
	at __ZenMain__.run(InspirationScript.zs) ~[?:?]
	at minetweaker.runtime.MTTweaker.load(MTTweaker.java:158) ~[MTTweaker.class:?]
	at minetweaker.MineTweakerImplementationAPI.reload(MineTweakerImplementationAPI.java:561) ~[MineTweakerImplementationAPI.class:?]
	at minetweaker.MineTweakerImplementationAPI.onServerStart(MineTweakerImplementationAPI.java:492) ~[MineTweakerImplementationAPI.class:?]
	at minetweaker.mc1710.MineTweakerMod.onServerAboutToStart(MineTweakerMod.java:169) ~[MineTweakerMod.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
	at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513) ~[forge-1.7.10-10.13.0.1208.jar:?]
	at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-16.0.jar:?]
	at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208) ~[LoadController.class:?]
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187) ~[LoadController.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-16.0.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-16.0.jar:?]
	at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118) ~[LoadController.class:?]
	at cpw.mods.fml.common.Loader.serverAboutToStart(Loader.java:809) ~[Loader.class:?]
	... 4 more