12:42:59 [SEVERE] Could not pass event TransactionEvent to ChestShop v3.50t0039
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
        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 com.Acrobot.ChestShop.Listeners.Player.PlayerInteract.onPlayerInteract(PlayerInteract.java:161)
        at sun.reflect.GeneratedMethodAccessor139.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:425)
        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 org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:178)
        at net.minecraft.server.v1_4_6.PlayerInteractManager.dig(PlayerInteractManager.java:114)
        at net.minecraft.server.v1_4_6.PlayerConnection.a(PlayerConnection.java:563)
        at net.minecraft.server.v1_4_6.Packet14BlockDig.handle(SourceFile:46)
        at net.minecraft.server.v1_4_6.NetworkManager.b(NetworkManager.java:290)
        at net.minecraft.server.v1_4_6.PlayerConnection.d(PlayerConnection.java:112)
        at net.minecraft.server.v1_4_6.ServerConnection.b(SourceFile:39)
        at net.minecraft.server.v1_4_6.DedicatedServerConnection.b(SourceFile:30)
        at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:585)
        at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
        at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:481)
        at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:416)
        at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.IllegalArgumentException: No enum constant com.greatmancode.craftconomy3.DisplayFormat.long
        at java.lang.Enum.valueOf(Unknown Source)
        at com.greatmancode.craftconomy3.DisplayFormat.valueOf(DisplayFormat.java:21)
        at com.greatmancode.craftconomy3.configuration.ConfigurationManager.getDisplayFormat(ConfigurationManager.java:188)
        at com.greatmancode.craftconomy3.Common.format(Common.java:327)
        at net.milkbowl.vault.economy.plugins.Economy_Craftconomy3.format(Economy_Craftconomy3.java:108)
        at com.Acrobot.ChestShop.Economy.Vault.format(Vault.java:33)
        at com.Acrobot.ChestShop.Economy.Economy.formatBalance(Economy.java:85)
        at com.Acrobot.ChestShop.Listeners.PostTransaction.TransactionMessageSender.sendSellMessage(TransactionMessageSender.java:59)
        at com.Acrobot.ChestShop.Listeners.PostTransaction.TransactionMessageSender.onTransaction(TransactionMessageSender.java:26)
        at sun.reflect.GeneratedMethodAccessor397.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:425)
        ... 24 more