[00:51:30] [Server thread/ERROR]: Error occurred while enabling Plugin v4.0 (Is it up to date?)
org.bukkit.plugin.IllegalPluginAccessException: Plugin attempted to register com.player.stuff.PlayerManager@71fc4222 while not enabled
	at org.bukkit.plugin.SimplePluginManager.registerEvents(SimplePluginManager.java:524) ~[bukkit.jar:git-Spigot-1360]
	at com.player.stuff.Plugin.onEnable(Plugin.java:54) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[bukkit.jar:git-Spigot-1360]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [bukkit.jar:git-Spigot-1360]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [bukkit.jar:git-Spigot-1360]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.loadPlugin(CraftServer.java:463) [bukkit.jar:git-Spigot-1360]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.enablePlugins(CraftServer.java:381) [bukkit.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.n(MinecraftServer.java:351) [bukkit.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.g(MinecraftServer.java:326) [bukkit.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.a(MinecraftServer.java:282) [bukkit.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.DedicatedServer.init(DedicatedServer.java:186) [bukkit.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:440) [bukkit.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [bukkit.jar:git-Spigot-1360]