On Bukkit Start Up:

C:\Users[USER]\Downloads\Bukkit>java -Xms1024M -Xmx1024M -jar craftbukkit-1.4.7
-R1.0.jar -o true
210 recipes
27 achievements
15:53:31 [INFO] Starting minecraft server version 1.4.7
15:53:31 [INFO] Loading properties
15:53:31 [INFO] Default game type: CREATIVE
15:53:31 [INFO] Generating keypair
15:53:31 [INFO] Starting Minecraft server on *:25565
15:53:33 [INFO] This server is running CraftBukkit version git-Bukkit-1.4.7-R1.0
-b2624jnks (MC: 1.4.7) (Implementing API version 1.4.7-R1.0)
15:53:33 [INFO] [VoxelSniper] Loading VoxelSniper v5.168.4-SNAPSHOT-jnks189
15:53:34 [INFO] Preparing level "TestWorld"
15:53:34 [INFO] Preparing start region for level 0 (Seed: -3670679370272599082)
15:53:35 [INFO] Preparing spawn area: 8%
15:53:36 [INFO] Preparing spawn area: 32%
15:53:37 [INFO] Preparing spawn area: 65%
15:53:38 [INFO] Preparing spawn area: 89%
15:53:39 [INFO] Preparing spawn area: 97%
15:53:40 [INFO] Preparing start region for level 1 (Seed: -3670679370272599082)
15:53:40 [INFO] Preparing spawn area: 0%
15:53:41 [INFO] Preparing spawn area: 36%
15:53:42 [INFO] [VoxelSniper] Enabling VoxelSniper v5.168.4-SNAPSHOT-jnks189
15:53:42 [SEVERE] Error occurred while enabling VoxelSniper v5.168.4-SNAPSHOT-jn
ks189 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_4_6/EntityLiving
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.getConstructor(Unknown Source)
at com.thevoxelbox.voxelsniper.SniperBrushes.getBrush(SniperBrushes.java:287)
at com.thevoxelbox.voxelsniper.SniperBrushes.getSniperBrushes(SniperBrushes.java:240)
at com.thevoxelbox.voxelsniper.MetricsManager.start(MetricsManager.java:116)
at com.thevoxelbox.voxelsniper.VoxelSniper.onEnable(VoxelSniper.java:256)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.v1_4_R1.CraftServer.loadPlugin(CraftServer.java:282)
at org.bukkit.craftbukkit.v1_4_R1.CraftServer.enablePlugins(CraftServer.java:264)
at net.minecraft.server.v1_4_R1.MinecraftServer.j(MinecraftServer.java:321)
at net.minecraft.server.v1_4_R1.MinecraftServer.e(MinecraftServer.java:300)
at net.minecraft.server.v1_4_R1.MinecraftServer.a(MinecraftServer.java:259)
at net.minecraft.server.v1_4_R1.DedicatedServer.init(DedicatedServer.java:149)
at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:399)
at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_4_6.EntityLiving
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 19 more
15:53:42 [INFO] Server permissions file permissions.yml is empty, ignoring it
15:53:42 [INFO] Done (8.935s)! For help, type "help" or "?"

When I Try To Use The Command /b bb:

15:59:58 [INFO] [PLAYER] issued server command: /b bb
15:59:58 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'b' i
n plugin VoxelSniper v5.168.4-SNAPSHOT-jnks189
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:186)
at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchCommand(CraftServer.java:514)
at net.minecraft.server.v1_4_R1.PlayerConnection.handleCommand(PlayerConnection.java:980)
at net.minecraft.server.v1_4_R1.PlayerConnection.chat(PlayerConnection.java:898)
at net.minecraft.server.v1_4_R1.PlayerConnection.a(PlayerConnection.java:853)
at net.minecraft.server.v1_4_R1.Packet3Chat.handle(Packet3Chat.java:44)
at net.minecraft.server.v1_4_R1.NetworkManager.b(NetworkManager.java:290)
at net.minecraft.server.v1_4_R1.PlayerConnection.d(PlayerConnection.java:113)
at net.minecraft.server.v1_4_R1.ServerConnection.b(SourceFile:39)
at net.minecraft.server.v1_4_R1.DedicatedServerConnection.b(SourceFile:30)
at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:598)
at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:224)
at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_4_6/EntityLiving
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.getConstructor(Unknown Source)
at com.thevoxelbox.voxelsniper.SniperBrushes.getBrush(SniperBrushes.java:287)
at com.thevoxelbox.voxelsniper.SniperBrushes.getSniperBrushes(SniperBrushes.java:240)
at com.thevoxelbox.voxelsniper.Sniper.(Sniper.java:96)
at com.thevoxelbox.voxelsniper.SniperPermissionHelper.getSniperInstance(SniperPermissionHelper.java:28)
at com.thevoxelbox.voxelsniper.VoxelSniperListener.commandSniperB(VoxelSniperListener.java:125)
at com.thevoxelbox.voxelsniper.VoxelSniperListener.onCommand(VoxelSniperListener.java:64)
at com.thevoxelbox.voxelsniper.VoxelSniper.onCommand(VoxelSniper.java:234)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
... 15 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_4_6.EntityLiving
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 27 more

im pretty sure that it just needs an update, but ill add these to be as thorough as possible. i have no other plugins on the server. im running 1.4.7 R1.0 as stated before. i have the latest version of java for x64.

ill leave this open for a reply, but i think i found the issue i was using an incompatible build for 1.4.7. i used one recommended in another issue. this build wasn't updated to the wiki or bukkit just so you know.

I think you're either using a wrong version of Bukkit or an incompatible/wrong build of sniper.

Whoops. I didn't see your other posts :P gonna close this.