skaerror

[Server thread/ERROR]: Error occurred while enabling SkAddonLib v2.0 (Is it up to date?)
java.lang.NoSuchMethodError: com.w00tmast3r.skriptaddon.skaddonlib.util.SimpleEnumClassInfo.after([Ljava/lang/String;)Lcom/w00tmast3r/skriptaddon/skaddonlib/util/SimpleEnumClassInfo;
	at com.w00tmast3r.skriptaddon.skriptplus.elements.SimpleTypes.run(SimpleTypes.java:21) ~[?:?]
	at com.w00tmast3r.skriptaddon.skaddonlib.development.registration.RegistrationManager.autoRegister(RegistrationManager.java:217) ~[?:?]
	at com.w00tmast3r.skriptaddon.skaddonlib.SkAddonLib.seekPlugins(SkAddonLib.java:91) ~[?:?]
	at com.w00tmast3r.skriptaddon.skaddonlib.SkAddonLib.onEnable(SkAddonLib.java:49) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[spigot.jar:git-Spigot-1486]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [spigot.jar:git-Spigot-1486]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-1486]
	at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugin(CraftServer.java:465) [spigot.jar:git-Spigot-1486]
	at org.bukkit.craftbukkit.v1_7_R3.CraftServer.enablePlugins(CraftServer.java:383) [spigot.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.n(MinecraftServer.java:359) [spigot.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.g(MinecraftServer.java:333) [spigot.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.a(MinecraftServer.java:289) [spigot.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:193) [spigot.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:457) [spigot.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1486]