[SEVERE] Error occurred while enabling FalseBookBlock v0.92alpha (Is it up to date?): com/bukkit/gemo/commands/Command
java.lang.NoClassDefFoundError: com/bukkit/gemo/commands/Command
at com.bukkit.gemo.FalseBook.Block.FalseBookBlockCore.initCommands(FalseBookBlockCore.java:116)
at com.bukkit.gemo.FalseBook.Block.FalseBookBlockCore.onEnable(FalseBookBlockCore.java:102)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:231)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:1057)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:379)
at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:191)
at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:174)
at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:357)
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:344)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:175)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)
Caused by: java.lang.ClassNotFoundException: com.bukkit.gemo.commands.Command
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:41)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)