[InvisibleBlocks] Enabling InvisibleBlocks v1.3
2012-10-04 18:33:31 [SEVERE] Error occurred while enabling InvisibleBlocks v1.3 (Is it up to date?)
java.lang.NullPointerException
	at com.mitiz.invisibleblocks.InvisibleBlocks.onEnable(InvisibleBlocks.java:62)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:365)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:265)
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:247)
	at net.minecraft.server.MinecraftServer.i(MinecraftServer.java:296)
	at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:275)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:225)
	at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:140)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:378)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)