2012-12-27 18:11:01 [INFO] [com.codedit.fireworkhelper] Enabling com.codedit.fireworkhelper v0.1
2012-12-27 18:11:01 [SEVERE] Error occurred while enabling com.codedit.fireworkhelper v0.1 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/FireworkEffect$Type
	at com.codedit.fireworkhelper.fireworkhelper.onEnable(fireworkhelper.java:108)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.v1_4_6.CraftServer.loadPlugin(CraftServer.java:278)
	at org.bukkit.craftbukkit.v1_4_6.CraftServer.enablePlugins(CraftServer.java:260)
	at net.minecraft.server.v1_4_6.MinecraftServer.j(MinecraftServer.java:321)
	at net.minecraft.server.v1_4_6.MinecraftServer.e(MinecraftServer.java:300)
	at net.minecraft.server.v1_4_6.MinecraftServer.a(MinecraftServer.java:259)
	at net.minecraft.server.v1_4_6.DedicatedServer.init(DedicatedServer.java:149)
	at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:399)
	at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.ClassNotFoundException: org.bukkit.FireworkEffect$Type
	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(ClassLoader.java:423)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	... 12 more