[11:08:32] [Server thread/INFO]: This may take some time to convert, expect server lag.
[11:08:32] [Server thread/WARN]: Unexpected exception while parsing console command "vault-convert MineConomy CraftConomy3"
org.bukkit.command.CommandException: Unhandled exception executing command 'vault-convert' in plugin Vault v1.2.31-b54
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[2013-12-30-08-34-08-spigot.jar:git-Spigot-1225] 
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:196) ~[2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:546) ~[2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchServerCommand(CraftServer.java:533) [2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at net.minecraft.server.v1_7_R1.DedicatedServer.aw(DedicatedServer.java:309) [2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:274) [2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:540) [2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:446) [2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
        at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [2013-12-30-08-34-08-spigot.jar:git-Spigot-1225]
Caused by: java.lang.NullPointerException
        at net.milkbowl.vault.economy.plugins.Economy_Craftconomy3.hasAccount(Economy_Craftconomy3.java:263) ~[?:?]
        at net.milkbowl.vault.Vault.convertCommand(Vault.java:484) ~[?:?]
        at net.milkbowl.vault.Vault.onCommand(Vault.java:441) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[2013-12-30-08-34-08-spigot.jar:git-Spigot-1225] 
        ... 8 more