Ah ! J'ai mis la version 1.7.10 et ça marche mais maintenant, quand je fais /npc create Roropiano ça ne marche pas !
Les logs :
[10:31:12] [Server thread/WARN]: java.lang.IllegalAccessError: tried to access field net.minecraft.pathfinding.PathNavigate.field_75521_i from class net.citizensnpcs.util.nms.PlayerNavigation
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.util.nms.PlayerNavigation.(PlayerNavigation.java:29)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.npc.entity.EntityHumanNPC.initialise(EntityHumanNPC.java:215)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.npc.entity.EntityHumanNPC.(EntityHumanNPC.java:65)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.npc.entity.HumanController.createEntity(HumanController.java:70)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.npc.AbstractEntityController.spawn(AbstractEntityController.java:36)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.npc.CitizensNPC.spawn(CitizensNPC.java:170)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.commands.NPCCommands.create(NPCCommands.java:366)
[10:31:12] [Server thread/WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[10:31:12] [Server thread/WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[10:31:12] [Server thread/WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[10:31:12] [Server thread/WARN]: at java.lang.reflect.Method.invoke(Method.java:606)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.api.command.CommandManager.executeMethod(CommandManager.java:154)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.api.command.CommandManager.execute(CommandManager.java:90)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.api.command.CommandManager.executeSafe(CommandManager.java:178)
[10:31:12] [Server thread/WARN]: at net.citizensnpcs.Citizens.onCommand(Citizens.java:236)
[10:31:12] [Server thread/WARN]: at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[10:31:12] [Server thread/WARN]: at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181)
[10:31:12] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:717)
[10:31:12] [Server thread/WARN]: at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:1347)
[10:31:12] [Server thread/WARN]: at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:1129)
[10:31:12] [Server thread/WARN]: at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(C01PacketChatMessage.java:38)
[10:31:12] [Server thread/WARN]: at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(C01PacketChatMessage.java:53)
[10:31:12] [Server thread/WARN]: at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:244)
[10:31:12] [Server thread/WARN]: at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:173)
[10:31:12] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:980)
[10:31:12] [Server thread/WARN]: at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:423)
[10:31:12] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:798)
[10:31:12] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658)
[10:31:12] [Server thread/WARN]: at java.lang.Thread.run(Thread.java:745)
[10:31:14] [Craft Scheduler Thread - 3/WARN]: Exception in thread "Craft Scheduler Thread - 3"
[10:31:14] [Craft Scheduler Thread - 3/WARN]: org.apache.commons.lang.UnhandledException: Plugin Citizens v2.0.13-SNAPSHOT (build 1166)