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via GitHub by morninggloree
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slimeknights/tconstruct/library/smeltery/ICastingRecipe
java.lang.NullPointerException: 	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at modtweaker.mods.tconstruct.commands.TConstructLogger.execute(TConstructLogger.java:39)	at minetweaker.MineTweakerImplementationAPI$19.execute(MineTweakerImplementationAPI.java:667)	at minetweaker.mc1102.server.MCServer$MCCommand.func_184881_a(MCServer.java:122)	at net.minecraft.command.CommandHandler.func_175786_a(CommandHandler.java:104)	at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:83)	at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:913)	at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:892)	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:37)	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:9)	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at net.minecraft.util.Util.func_181617_a(SourceFile:45)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:149)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)	at java.lang.Thread.run(Thread.java:745)