2015-02-28 07:10:16 [ERROR] Could not pass event InventoryClickEvent to HyperMerchant v1.58-dev
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1588) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:31) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:9) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [?:1.7.0_76]
	at java.util.concurrent.FutureTask.run(FutureTask.java:262) [?:1.7.0_76]
	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	at java.lang.Thread.run(Thread.java:745) [?:1.7.0_76]
Caused by: java.lang.NumberFormatException: null
	at java.lang.Integer.parseInt(Integer.java:454) ~[?:1.7.0_76]
	at java.lang.Integer.parseInt(Integer.java:527) ~[?:1.7.0_76]
	at regalowl.hyperconomy.inventory.HEnchantment.<init>(HEnchantment.java:29) ~[?:?]
	at regalowl.hyperconomy.inventory.HItemMeta.<init>(HItemMeta.java:39) ~[?:?]
	at regalowl.hyperconomy.inventory.HItemMetaFactory.generate(HItemMetaFactory.java:8) ~[?:?]
	at regalowl.hyperconomy.inventory.HItemStack.<init>(HItemStack.java:47) ~[?:?]
	at regalowl.hyperconomy.tradeobject.BasicTradeObject.getItem(BasicTradeObject.java:676) ~[?:?]
	at regalowl.hyperconomy.tradeobject.BasicTradeObject.matchesItemStack(BasicTradeObject.java:691) ~[?:?]
	at regalowl.hyperconomy.HyperEconomy.getTradeObject(HyperEconomy.java:286) ~[?:?]
	at regalowl.hyperconomy.HyperAPI.getHyperObject(HyperAPI.java:159) ~[?:?]
	at grokswell.hypermerchant.ShopTransactions.SellItem(ShopTransactions.java:99) ~[?:?]
	at grokswell.hypermerchant.ShopTransactions.Sell(ShopTransactions.java:78) ~[?:?]
	at grokswell.hypermerchant.ShopMenu.handleMenuItem(ShopMenu.java:520) ~[?:?]
	at grokswell.hypermerchant.ShopMenu.onInventoryClickOrCreative(ShopMenu.java:551) ~[?:?]
	at grokswell.hypermerchant.ShopMenu.onInventoryClick(ShopMenu.java:532) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_76]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_76]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_76]
	at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_76]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8-343.jar:git-Spigot-c3c767f-33d5de3]
	... 14 more