[16:46:52 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'mc'
in plugin MagicCarpet v2.4.5
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spi
got.jar:git-Spigot-da32fe1-a972ddf]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:18
1) ~[spigot.jar:git-Spigot-da32fe1-a972ddf]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServe
r.java:643) ~[spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerCon
nection.java:1083) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java
:918) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java
:26) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java
:53) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spi
got.jar:git-Spigot-da32fe1-a972ddf]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [
?:1.8.0_25]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_25]
        at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:6
86) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:3
16) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:6
27) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java
:530) [spigot.jar:git-Spigot-da32fe1-a972ddf]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_25]
Caused by: java.lang.IncompatibleClassChangeError: Found interface com.sk89q.wor
ldguard.protection.ApplicableRegionSet, but class was expected
        at net.digiex.magiccarpet.plugins.WorldGuard.canFlyHere(WorldGuard.java:
39) ~[?:?]
        at net.digiex.magiccarpet.Permissions.canFlyHere(Permissions.java:80) ~[
?:?]
        at net.digiex.magiccarpet.commands.Carpet.onCommand(Carpet.java:78) ~[?:
?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spi
got.jar:git-Spigot-da32fe1-a972ddf]
        ... 14 more