Areashop console error log

[17:24:51 ERROR]: Error occurred while enabling AreaShop v2.1.0 (Is it up to date?)
java.lang.IllegalArgumentException: The permission areashop.limits.admin is already defined!
        at org.bukkit.plugin.SimplePluginManager.addPermission(SimplePluginManager.java:606) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at nl.evolutioncoding.areashop.AreaShop.registerDynamicPermissions(AreaShop.java:239) ~[?:?]
        at nl.evolutioncoding.areashop.AreaShop.onEnable(AreaShop.java:153) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:412) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at com.rylinaux.plugman.util.PluginUtil.load(PluginUtil.java:273) [PlugMan.jar:?]
        at com.rylinaux.plugman.command.LoadCommand.execute(LoadCommand.java:114) [PlugMan.jar:?]
        at com.rylinaux.plugman.PlugManCommands.onCommand(PlugManCommands.java:100) [PlugMan.jar:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:767) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.PlayerConnection.handleCommand(PlayerConnection.java:1043) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:880) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.PacketPlayInChat.handle(PacketPlayInChat.java:65) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:186) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:734) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]