2012-12-10 14:54:35 [SEVERE] Could not load 'plugins\mcore5.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/inventory/CraftItemStack
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:154)
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
	at org.bukkit.craftbukkit.v1_4_5.CraftServer.loadPlugins(CraftServer.java:261)
	at org.bukkit.craftbukkit.v1_4_5.CraftServer.<init>(CraftServer.java:239)
	at net.minecraft.server.v1_4_5.ServerConfigurationManagerAbstract.<init>(ServerConfigurationManagerAbstract.java:52)
	at net.minecraft.server.v1_4_5.ServerConfigurationManager.<init>(SourceFile:11)
	at net.minecraft.server.v1_4_5.DedicatedServer.init(DedicatedServer.java:111)
	at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:402)
	at net.minecraft.server.v1_4_5.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/inventory/CraftItemStack
	at com.massivecraft.mcore5.MCore.getMCoreGsonBuilder(MCore.java:48)
	at com.massivecraft.mcore5.MCore.<clinit>(MCore.java:39)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:143)
	... 9 more
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.inventory.CraftItemStack
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:34)
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 14 more
2012-12-10 14:54:36 [SEVERE] Could not load 'plugins\vampire.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: mcore5
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:195)
	at org.bukkit.craftbukkit.v1_4_5.CraftServer.loadPlugins(CraftServer.java:261)
	at org.bukkit.craftbukkit.v1_4_5.CraftServer.<init>(CraftServer.java:239)
	at net.minecraft.server.v1_4_5.ServerConfigurationManagerAbstract.<init>(ServerConfigurationManagerAbstract.java:52)
	at net.minecraft.server.v1_4_5.ServerConfigurationManager.<init>(SourceFile:11)
	at net.minecraft.server.v1_4_5.DedicatedServer.init(DedicatedServer.java:111)
	at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:402)
	at net.minecraft.server.v1_4_5.ThreadServerApplication.run(SourceFile:856)