Thaumcraft 4 pickup Crash

java.lang.NullPointerException
	at net.minecraft.entity.EntityList.func_75621_b(EntityList.java:243)
	at thaumcraft.common.lib.research.ScanManager.generateEntityAspects(ScanManager.java:139)
	at thaumcraft.common.lib.research.ScanManager.completeScan(ScanManager.java:326)
	at thaumcraft.common.lib.PacketHandler.handleScannedPacket(PacketHandler.java:803)
	at thaumcraft.common.lib.PacketHandler.onPacketData(PacketHandler.java:152)
	at cpw.mods.fml.common.network.NetworkRegistry.handlePacket(NetworkRegistry.java:255)
	at cpw.mods.fml.common.network.NetworkRegistry.handleCustomPacket(NetworkRegistry.java:245)
	at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket250Packet(FMLNetworkHandler.java:84)
	at net.minecraft.network.NetServerHandler.func_72501_a(NetServerHandler.java:1111)
	at net.minecraft.network.packet.Packet250CustomPayload.func_73279_a(SourceFile:61)
	at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
	at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)
	at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
	at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:109)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:689)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:585)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:175)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)