14:28:37 [SEVERE] Error occurred while enabling blockTest v0.1 (Is it up to date?): org/getspout/spoutapi/event/inventory/SpoutCustomBlockDesign
java.lang.NoClassDefFoundError: org/getspout/spoutapi/event/inventory/SpoutCustomBlockDesign
        at me.flayan.blocktest.blockTest.buildDiamondQuartz(blockTest.java:33)
        at me.flayan.blocktest.blockTest.onEnable(blockTest.java:19)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:126)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:885)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:278)
        at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:178)
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:161)
        at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:286)
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:273)
        at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:149)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:337)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
Caused by: java.lang.ClassNotFoundException: org.getspout.spoutapi.event.inventory.SpoutCustomBlockDesign
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:36)
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:24)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)