Problem/Bug Citizens /builder build internal errorr

Hello this is my first post here, hope i do well and dont disturb much, thank you all.
Get internal error when try to use this command /builder build


[18:32:49] [Server thread/INFO]: ADMIN issued server command: /builder build
[18:32:49] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'builder' in plugin Builder v0.9.1

[18:33:52] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'builder' in plugin Builder v0.9.1
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:196) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:542) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:932) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:814) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:47) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R4/NBTBase
at net.jrbudda.builder.EmptyBuildBlock.getMat(EmptyBuildBlock.java:19) ~[?:?]
at net.jrbudda.builder.BuilderSchematic.BuildQueue(BuilderSchematic.java:61) ~[?:?]
at net.jrbudda.builder.BuilderTrait.StartBuild(BuilderTrait.java:346) ~[?:?]
at net.jrbudda.builder.BuilderTrait.TryBuild(BuilderTrait.java:288) ~[?:?]
at net.jrbudda.builder.Builder.onCommand(Builder.java:468) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
... 13 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R4.NBTBase
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
at net.jrbudda.builder.EmptyBuildBlock.getMat(EmptyBuildBlock.java:19) ~[?:?]
at net.jrbudda.builder.BuilderSchematic.BuildQueue(BuilderSchematic.java:61) ~[?:?]
at net.jrbudda.builder.BuilderTrait.StartBuild(BuilderTrait.java:346) ~[?:?]
at net.jrbudda.builder.BuilderTrait.TryBuild(BuilderTrait.java:288) ~[?:?]
at net.jrbudda.builder.Builder.onCommand(Builder.java:468) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
... 13 more

 

@GothicLord what server version are you using, also please surround the error above in code tags.

 

@GothicLord I'm not sure if Builder works on 1.8, just a thought

 

oh, no read nothing of compativility with 1.2.7 r02 before, maybe i upgrade my server and start all work another time but this time i search for nice builders, thank you for all