gistfile1

java.lang.NoClassDefFoundError: scala/Math$
	at mods.ft975.util.BlockHelper$$anonfun$dropItemStack$1.apply(BlockHelper.scala:23)
	at mods.ft975.util.BlockHelper$$anonfun$dropItemStack$1.apply(BlockHelper.scala:13)
	at scala.collection.immutable.List.foreach(List.scala:309)
	at mods.ft975.util.BlockHelper$.dropItemStack(BlockHelper.scala:13)
	at mods.ft975.lighting.BlockLamp.breakBlock(BlockLamp.scala:63)
	at net.minecraft.world.chunk.Chunk.setBlockIDWithMetadata(Chunk.java:715)
	at net.minecraft.world.World.setBlock(World.java:558)
	at net.minecraft.world.World.setBlockToAir(World.java:687)
	at net.minecraft.block.Block.removeBlockByPlayer(Block.java:1640)
	at net.minecraft.item.ItemInWorldManager.removeBlock(ItemInWorldManager.java:275)
	at net.minecraft.item.ItemInWorldManager.tryHarvestBlock(ItemInWorldManager.java:331)
	at net.minecraft.item.ItemInWorldManager.onBlockClicked(ItemInWorldManager.java:206)
	at net.minecraft.network.NetServerHandler.handleBlockDig(NetServerHandler.java:491)
	at net.minecraft.network.packet.Packet14BlockDig.processPacket(Packet14BlockDig.java:67)
	at net.minecraft.network.MemoryConnection.processReadPackets(MemoryConnection.java:89)
	at net.minecraft.network.NetServerHandler.networkTick(NetServerHandler.java:134)
	at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:53)
	at net.minecraft.server.integrated.IntegratedServerListenThread.networkTick(IntegratedServerListenThread.java:109)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:677)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:573)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:127)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:470)
	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.ClassNotFoundException: scala.Math$
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 23 more
Caused by: java.lang.NullPointerException
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:227)
	... 25 more