---- Minecraft Crash Report ----

WARNING: coremods are present:
NowWithRendering (hopperducts-mc1.8-1.4.5.jar)
Contact their authors BEFORE contacting forge

// Oh - I know what I did wrong!

Time: 2/15/16 8:07 AM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at net.minecraft.entity.passive.EntityVillager$ListEnchantedBookForEmeralds.func_179401_a(EntityVillager.java:936)
at net.minecraft.entity.passive.EntityVillager.func_175554_cu(EntityVillager.java:575)
at net.minecraft.entity.passive.EntityVillager.func_70934_b(EntityVillager.java:536)
at net.minecraft.entity.player.EntityPlayerMP.func_180472_a(EntityPlayerMP.java:757)
at mca.packets.PacketInteract.processOnGameThread(PacketInteract.java:130)
at radixcore.network.AbstractPacketHandler.processPackets(AbstractPacketHandler.java:164)
at mca.core.forge.EventHooksFML.serverTickEventHandler(EventHooksFML.java:162)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_15_EventHooksFML_serverTickEventHandler_ServerTickEvent.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at net.minecraftforge.fml.common.FMLCommonHandler.onPreServerTick(FMLCommonHandler.java:301)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:258)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:478)
at java.lang.Thread.run(Thread.java:745)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- System Details --
Details:
Minecraft Version: 1.8
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 251170840 bytes (239 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.10 FML v8.0.99.99 Minecraft Forge 11.14.4.1563 Optifine OptiFine_1.8_HD_U_D5 18 mods loaded, 18 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAAAAAAA mcp{9.05} Minecraft Coder Pack
UCHIJAAAAAAAAA FML{8.0.99.99} Forge Mod Loader
UCHIJAAAAAAAAA Forge{11.14.4.1563} Minecraft Forge
UCHIJAAAAAAAAA ChickenShed{1.1.4} [Chicken Shed]([1.8] ChickenShed %28v1.2.0%29.jar)
UCHIJAAAAAAAAA antiqueatlas{4.2.6-1.8} Antique Atlas
UCHIJAAAAAAAAA buffalo{1.0} Bison Mod
UCHIJAAAAAAAAA CMDfiles{0} [CMDfiles](CMD files.jar)
UCHIJAAAAAAAAA cmd{1.8} [Custom Music Discs](Custom Music Discs-1.8.jar)
UCHIJAAAAAAAAA hopperducts{1.4.5} Hopper Ducts
UCHIJAAAAAAAAA imc{1.9.0} [Improving Minecraft](Improving Minecraft-1.9.0.jar)
UCHIJAAAAAAAAA JEI{2.14.0.139} Just Enough Items
UCHIJAAAAAAAAA latticemod{1.1} Lattice Mod
UCHIJAAAAAAAAA RadixCore{1.8-2.0.5} RadixCore
UCHIJAAAAAAAAA MCA{1.8-5.0.7.1} Minecraft Comes Alive
UCHIJAAAAAAAAA CookYourFood{0.9} Cook your food
UCHIJAAAAAAAAA NoPillaring{0.95dim} Pillaring denied
UCHIJAAAAAAAAA ropebridge{1.1} Rope Bridge
UCHIJAAAAAAAAA SophisticatedWolves{3.6.0} SophisticatedWolves
Loaded coremods (and transformers):
NowWithRendering (hopperducts-mc1.8-1.4.5.jar)
net.fybertech.nwr.NowWithRendering
GL info: ERROR RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['MoonFather'/79696, l='New World-', x=4398.12, y=66.00, z=-4094.32]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Remove your other mods and reproduce the issue, then post again.