I have 1868 users in essentials economy, using the Feb 7th build #56 the import runs and says conversion succeeded, but does not create any accounts, it just credits any accounts that are already in with the essentials balances.

On further use...this build can't write to the database, but the old release version can.

it creates the table but will not write to it.

fe create SugarGal
2014-03-17 17:45:12 [WARNING] Unexpected exception while parsing console command "fe create SugarGal"
org.bukkit.command.CommandException: Unhandled exception executing command 'fe' in plugin Fe v0.8-SNAPSHOT
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:192)
at org.bukkit.craftbukkit.v1_6_R3.CraftServer.dispatchCommand(CraftServer.java:533)
at org.bukkit.craftbukkit.v1_6_R3.CraftServer.dispatchServerCommand(CraftServer.java:514)
at net.minecraft.server.dedicated.DedicatedServer.func_71333_ah(DedicatedServer.java:374)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:331)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:777)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:659)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.NullPointerException
at org.melonbrew.fe.database.databases.SQLDB.loadAccountMoney(SQLDB.java:189)
at org.melonbrew.fe.database.Database.getAccount(Database.java:44)
at org.melonbrew.fe.database.Database.accountExists(Database.java:70)
at org.melonbrew.fe.API.accountExists(API.java:81)
at org.melonbrew.fe.command.commands.CreateCommand.onCommand(CreateCommand.java:26)
at org.melonbrew.fe.FeCommand.onCommand(FeCommand.java:123)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
... 8 more

Try using Vault's conversion command.