WorldEdit Stacktrace, 2015 June 08

[15:53:35 INFO]: InfiniteCorners issued server command: //schematic save mce peak2
[15:53:35 ERROR]: [WorldEdit] An unexpected error while handling a WorldEdit command
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_45]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_45]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_45]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_45]
        at com.sk89q.worldedit.util.command.parametric.ParametricCallable.call(ParametricCallable.java:243) ~[WorldEdit.jar:?]
        at com.sk89q.worldedit.util.command.SimpleDispatcher.call(SimpleDispatcher.java:125) ~[WorldEdit.jar:?]
        at com.sk89q.worldedit.util.command.SimpleDispatcher.call(SimpleDispatcher.java:125) ~[WorldEdit.jar:?]
        at org.primesoft.asyncworldedit.worldedit.utils.command.DispatcherWrapper.call(DispatcherWrapper.java:119) ~[AsyncWorldEdit.jar:?]
        at com.sk89q.worldedit.extension.platform.CommandManager.handleCommand(CommandManager.java:225) [WorldEdit.jar:?]
        at sun.reflect.GeneratedMethodAccessor51.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_45]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_45]
        at com.sk89q.worldedit.util.eventbus.MethodEventHandler.dispatch(MethodEventHandler.java:58) [WorldEdit.jar:?]
        at com.sk89q.worldedit.util.eventbus.EventHandler.handleEvent(EventHandler.java:73) [WorldEdit.jar:?]
        at com.sk89q.worldedit.util.eventbus.EventBus.dispatch(EventBus.java:187) [WorldEdit.jar:?]
        at com.sk89q.worldedit.util.eventbus.EventBus.post(EventBus.java:173) [WorldEdit.jar:?]
        at com.sk89q.worldedit.bukkit.WorldEditPlugin.onCommand(WorldEditPlugin.java:242) [WorldEdit.jar:?]
        at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:54) [WorldEdit.jar:?]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:642) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1138) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:973) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_45]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_45]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SystemUtils.java:19) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:770) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:371) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:709) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:612) [paperspigot.jar:git-PaperSpigot-55b35d8-7723b90]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]
Caused by: java.lang.IllegalAccessError: tried to access class com.sk89q.worldedit.command.FlattenedClipboardTransform from class com.sk89q.worldedit.command.SchematicCommands
        at com.sk89q.worldedit.command.SchematicCommands.save(SchematicCommands.java:172) ~[?:?]
        ... 33 more