What version/build of NametagEdit are you using? Type /ver NametagEdit

NametagEdit version 4.1.3

What version of Bukkit/Spigot/PaperSpigot are you using? Type /ver

This server is running CraftBukkit version git-Spigot-db6de12-18fbb24 (MC: 1.8.8) (Implementing API version 1.8.8-R0.1-SNAPSHOT)

What plugins are you using? Type /plugins

Plugins (17): NoJoinMessage, MultiWorld, WorldEdit, EmptyWorldGenerator, TimePerPlayer, NoWeather, AutoShutdown, NametagEdit, Vault, FastPot, NoLeafDecay, WorldGuard, ProtocolLib, NoCheatPlus, PowerfulPerms, PracticePVP, PlayerHiderRegion

Please explain your issue?

The converter from file to db doesn't work

How do you reproduce the issue?

Trying to convert the file to db

Is there an error(s) in the console? Please use: https://pastebin.com

http://pastebin.com/t8fSXD74