int length = 0;
				if(old !=null){
					length = old.length;
				}
				//((ignore this line, this is just a test))
				Bukkit.getPlayer("shellofchaos").sendMessage("name: " +Blocker.getBlockname(loc));
				//next line gives an nullpointerexception and it isn't
				//Blocker.getBlockname(loc)
				old[length] = Blocker.getBlockname(loc)



full error log:
2012-09-06 02:33:44 [SEVERE] Could not pass event PlayerMoveEvent to BlockScripts
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:332)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:216)
	at net.minecraft.server.Packet10Flying.handle(SourceFile:136)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:276)
	at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:109)
	at net.minecraft.server.ServerConnection.b(SourceFile:35)
	at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:578)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: java.lang.NullPointerException
	at com.gmail.maicospiering.BlockScripts.actionManager.getlocation(actionManager.java:96)
	at com.gmail.maicospiering.BlockScripts.actionManager.doAction(actionManager.java:22)
	at com.gmail.maicospiering.BlockScripts.myPlayerListener.onWalk(myPlayerListener.java:29)
	at sun.reflect.GeneratedMethodAccessor90.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:330)