[22:59:15 INFO]: madtomic issued server command: /npc select 0
[22:59:16 INFO]: madtomic issued server command: /builder load house
[22:59:20 INFO]: madtomic issued server command: /builder build
[22:59:20 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'buil
der' in plugin Builder v0.9.1
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[pap
erspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:14
1) ~[paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at org.bukkit.craftbukkit.v1_8_R2.CraftServer.dispatchCommand(CraftServe
r.java:646) ~[paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.PlayerConnection.handleCommand(PlayerCon
nection.java:1140) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.PlayerConnection.a(PlayerConnection.java
:975) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.PacketPlayInChat.a(PacketPlayInChat.java
:45) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.PacketPlayInChat.a(PacketPlayInChat.java
:1) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.PlayerConnectionUtils$1.run(SourceFile:1
3) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [
?:1.8.0_45]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_45]
        at net.minecraft.server.v1_8_R2.SystemUtils.a(SourceFile:60) [paperspigo
t-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.MinecraftServer.A(MinecraftServer.java:7
62) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.DedicatedServer.A(DedicatedServer.java:3
72) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.MinecraftServer.z(MinecraftServer.java:7
03) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at net.minecraft.server.v1_8_R2.MinecraftServer.run(MinecraftServer.java
:606) [paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/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:467) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[pap
erspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        ... 15 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R3.NBTBas
e
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:91) ~[paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:86) ~[paperspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_45]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_45]
        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:467) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[pap
erspigot-1.8.3.jar:git-PaperSpigot-6c710c1-ba32592]
        ... 15 more