[20:40:29] [Server thread/INFO]: _Riaz issued server command: /f join Vanguard
[20:40:29] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing 'f join Vanguard' in com.massivecraft.massivecore.cmd.MassiveCoreBukkitCommand(f)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:188) ~[spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:767) ~[spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.PlayerConnection.handleCommand(PlayerConnection.java:1043) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:880) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.PacketPlayInChat.handle(PacketPlayInChat.java:65) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:186) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:734) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
Caused by: java.lang.NoSuchMethodError: com.massivecraft.massivecore.cmd.arg.ARSenderEntity.getStartAny(Lcom/massivecraft/massivecore/store/SenderColl;)Lcom/massivecraft/massivecore/cmd/arg/ARSenderEntity;
	at com.massivecraft.factions.cmd.arg.ARUPlayer.getStartAny(ARUPlayer.java:16) ~[?:?]
	at com.massivecraft.factions.cmd.CmdFactionsJoin.perform(CmdFactionsJoin.java:48) ~[?:?]
	at com.massivecraft.massivecore.cmd.MassiveCommand.execute(MassiveCommand.java:245) ~[?:?]
	at com.massivecraft.massivecore.cmd.MassiveCommand.execute(MassiveCommand.java:236) ~[?:?]
	at com.massivecraft.massivecore.cmd.MassiveCommand.execute(MassiveCommand.java:252) ~[?:?]
	at com.massivecraft.massivecore.cmd.MassiveCoreBukkitCommand.execute(MassiveCoreBukkitCommand.java:67) ~[?:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181) ~[spigot.jar:git-Spigot-1.7.9-R0.2-205-g3633afe]
	... 12 more