[01:18:11] [Server thread/ERROR]: Error occurred while enabling qCore v0.0.0.1 (Is it up to date?)
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_45]
	at java.util.ArrayList$Itr.next(ArrayList.java:851) ~[?:1.8.0_45]
	at pl.more4you.qcore.main.Core.onEnable(Core.java:75) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:350) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:390) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:460) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:380) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.reload(CraftServer.java:796) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.Bukkit.reload(Bukkit.java:279) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:24) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:706) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchServerCommand(CraftServer.java:693) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.DedicatedServer.aw(DedicatedServer.java:309) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:274) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:562) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:469) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
[01:18:11] [Server thread/INFO]: [PlaceholderAPI] Enabling PlaceholderAPI v1.0
[01:18:11] [Server thread/INFO]: [PlaceholderAPI] Successfully registered player placeholders!
[01:18:11] [Server thread/INFO]: [PacketListenerApi] Enabling PacketListenerApi v2.5.2
[01:18:11] [Server thread/INFO]: [PacketListenerAPI] Metrics started.
[01:18:11] [Server thread/INFO]: [PacketListenerAPI] Adding channels for all online players...
[01:18:11] [Server thread/ERROR]: Error occurred while enabling PacketListenerApi v2.5.2 (Is it up to date?)
java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
	at de.inventivegames.packetlistener.PacketListenerAPI.onEnable(PacketListenerAPI.java:99) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:350) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:390) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:460) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:380) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.reload(CraftServer.java:796) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.Bukkit.reload(Bukkit.java:279) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:24) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:706) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchServerCommand(CraftServer.java:693) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.DedicatedServer.aw(DedicatedServer.java:309) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:274) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:562) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:469) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot_1.7.2.jar:git-Spigot-1.7.2-R0.3-122-gb58e277]
[01:18:11] [Server thread/INFO]: [NPCLib] Enabling NPCLib v1.5.3
[01:18:11] [Server thread/INFO]: [NPCLib] Server version is v1_7_R1
[01:18:11] [Server thread/WARN]: java.lang.ClassNotFoundException: de.inventivegames.npc.entity.NPCEntity_v1_7_R1
[01:18:11] [Server thread/WARN]: 	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62)
[01:18:11] [Server thread/WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[01:18:11] [Server thread/WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[01:18:11] [Server thread/WARN]: 	at java.lang.Class.forName0(Native Method)
[01:18:11] [Server thread/WARN]: 	at java.lang.Class.forName(Class.java:264)
[01:18:11] [Server thread/WARN]: 	at de.inventivegames.npc.NPCLibPlugin.onEnable(NPCLibPlugin.java:106)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:350)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:390)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:460)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:380)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.reload(CraftServer.java:796)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.Bukkit.reload(Bukkit.java:279)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:24)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:706)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchServerCommand(CraftServer.java:693)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.DedicatedServer.aw(DedicatedServer.java:309)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:274)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:562)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:469)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)
[01:18:11] [Server thread/INFO]: [NPCLib] Found compatible Profile class: de.inventivegames.npc.profile.NPCProfile_v1_7
[01:18:11] [Server thread/WARN]: java.lang.ClassNotFoundException: de.inventivegames.npc.meta.UUIDMetadataStore_v1_7_R1
[01:18:11] [Server thread/WARN]: 	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62)
[01:18:11] [Server thread/WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[01:18:11] [Server thread/WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[01:18:11] [Server thread/WARN]: 	at java.lang.Class.forName0(Native Method)
[01:18:11] [Server thread/WARN]: 	at java.lang.Class.forName(Class.java:264)
[01:18:11] [Server thread/WARN]: 	at de.inventivegames.npc.NPCLibPlugin.onEnable(NPCLibPlugin.java:120)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:350)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:390)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:460)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:380)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.reload(CraftServer.java:796)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.Bukkit.reload(Bukkit.java:279)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:24)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:706)
[01:18:11] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchServerCommand(CraftServer.java:693)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.DedicatedServer.aw(DedicatedServer.java:309)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:274)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:562)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:469)
[01:18:11] [Server thread/WARN]: 	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)
[01:18:11] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[01:18:11] [Server thread/INFO]: CONSOLE: Reload complete.
[01:18:11] [Craft Scheduler Thread - 283/WARN]: Exception in thread "Craft Scheduler Thread - 283" 
[01:18:11] [Craft Scheduler Thread - 283/WARN]: org.apache.commons.lang.UnhandledException: Plugin PacketListenerApi v2.5.2 generated an exception while executing task 21
	at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()Ljava/util/Collection;
	at org.mcstats.MetricsLite.postPlugin(MetricsLite.java:281)
	at org.mcstats.MetricsLite.access$3(MetricsLite.java:274)
	at org.mcstats.MetricsLite$1.run(MetricsLite.java:169)
	at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:58)
	at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	... 3 more