Done Fatal Error

Trying to connect to the server and I'm getting a fatal error that apparently has something to do with molten aluminum ?

Spoiler: error text

[14:47:10] [Client thread/ERROR] [FML]: There was a critical exception handling a packet on channel FORGE
java.lang.IllegalArgumentException: value already present: aluminum.molten
at com.google.common.collect.HashBiMap.put(HashBiMap.java:238) ~[guava-17.0.jar:?]
at com.google.common.collect.HashBiMap.put(HashBiMap.java:215) ~[guava-17.0.jar:?]
at net.minecraftforge.fluids.FluidRegistry.loadFluidDefaults(FluidRegistry.java:117) ~[FluidRegistry.class:?]
at net.minecraftforge.fluids.FluidRegistry.initFluidIDs(FluidRegistry.java:82) ~[FluidRegistry.class:?]
at net.minecraftforge.common.network.FluidIdRegistryMessageHandler.channelRead0(FluidIdRegistryMessageHandler.java:15) ~[FluidIdRegistryMessageHandler.class:?]
at net.minecraftforge.common.network.FluidIdRegistryMessageHandler.channelRead0(FluidIdRegistryMessageHandler.java:11) ~[FluidIdRegistryMessageHandler.class:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[MessageToMessageDecoder.class:?]
at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?]
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?]
at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?]
at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:78) [bcx.class:?]
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1661) [bao.class:?]
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973) [bao.class:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898) [bao.class:?]
at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

 

I'm using Curse Launcher, installed a new profile and that works. I imagine it probably has to do with something I've installed afterwards, since I hadn't had any issues while using my laptop versus the desktop I'm currently on.

 

Can you go ahead and pastebin the latest log from the client?

 

Which log are you looking for? The one I found in a folder seemed to have very little information. I'm guessing you perhaps mean the game output log? Just trying to make sure.

 

Right click that, and press open folder. Then go to logs, and scroll to the bottom to find latest.log. Yes, I know its not agrarian skies, but the method still applies.

 

Okay, I had found it then.

 

Via new profile, it is -- I'm not sure what's offending it on my normal one, though the only differences I can think of is resource packs, shaders and shader mod, or OptiFine. None of which is required to play AS2, so I make do without to use the server.