chestshop error

2012-04-25 12:16:32 [SEVERE] Could not pass event BlockPlaceEvent to ChestShop

org.bukkit.event.EventException

	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:303)

	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)

	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:459)

	at org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:98)

	at net.minecraft.server.ItemBlock.interactWith(ItemBlock.java:71)

	at net.minecraft.server.ItemStack.placeItem(ItemStack.java:83)

	at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:303)

	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:636)

	at net.minecraft.server.Packet15Place.handle(SourceFile:39)

	at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)

	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)

	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)

	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:551)

	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)

	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Caused by: java.lang.NullPointerException

	at com.Acrobot.ChestShop.Protection.Plugins.SCLplugin.canAccess(SCLplugin.java:23)

	at com.Acrobot.ChestShop.Protection.Security.canAccess(Security.java:41)

	at com.Acrobot.ChestShop.Listeners.blockPlace.onBlockPlace(blockPlace.java:34)

	at sun.reflect.GeneratedMethodAccessor178.invoke(Unknown Source)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:601)

	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301)

	... 14 more