Minecraft Forums

I'm quite new to all of this, and my server first crashed because of player data that could not be saved

then it refused to reboot, so i used a back up

so right now i rebooted the server, more things appear on the console, yay!

but then this occurs

[07:17:28] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.IllegalArgumentException: Duplicate enchantment id! class mrtjp.projectred.expansion.EnchantmentFuelEfficiency and class mrcomputerghost.runicdungeons.ench.EnchantmentPoisonThorns Enchantment ID:80
at net.minecraft.enchantment.Enchantment.(Enchantment.java:53) ~[aft.class:?]
at mrtjp.projectred.expansion.EnchantmentFuelEfficiency.(items.scala:315) ~[EnchantmentFuelEfficiency.class:?]
at mrtjp.projectred.expansion.ExpansionProxy_server.init(proxies.scala:67) ~[ExpansionProxy_server.class:?]
at mrtjp.projectred.ProjectRedExpansion$.init(ProjectRedExpansion.scala:46) ~[ProjectRedExpansion$.class:?]
at mrtjp.projectred.ProjectRedExpansion.init(ProjectRedExpansion.scala) ~[ProjectRedExpansion.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532) ~[FMLModContainer.class:?]
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
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 cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212) ~[LoadController.class:?]
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190) ~[LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
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 cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119) ~[LoadController.class:?]
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:737) ~[Loader.class:?]
at cpw.mods.fml.server.FMLServerHandler.finishServerLoading(FMLServerHandler.java:97) ~[FMLServerHandler.class:?]
at cpw.mods.fml.common.FMLCommonHandler.onServerStarted(FMLCommonHandler.java:319) ~[FMLCommonHandler.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:210) ~[lt.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]


it does make a crash report this time, but I have no idea what this issue actually means..
Hopefully someone can help me out!
Kind regards