Error

22:30:43 [INFO] Rytis110 tried to use command /money
22:30:43 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'money' in plugin Craftconomy v2.3.5-b4
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:651)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:822)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:782)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:765)
        at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:114)
        at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:97)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:640)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:518)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 2
        at java.lang.String.substring(String.java:1955)
        at me.greatman.Craftconomy.Craftconomy.format(Craftconomy.java:355)
        at me.greatman.Craftconomy.Craftconomy.format(Craftconomy.java:320)
        at me.greatman.Craftconomy.commands.money.OwnMoneyCommand.perform(OwnMoneyCommand.java:29)
        at me.greatman.Craftconomy.commands.BaseCommand.execute(BaseCommand.java:58)
        at me.greatman.Craftconomy.Craftconomy.handleMoneyCommand(Craftconomy.java:272)
        at me.greatman.Craftconomy.Craftconomy.onCommand(Craftconomy.java:237)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
        ... 12 more