Bukkit

Describe to us the issue that you're having:
When you try doing /permissions convert, it says "An internal error occurred while attempting to perform this command"
The fact that the Users file isn't converted is breaking other permissions.
At first, I thought it was because some of the players that recently joined were already UUIDs, but when I went back and deleted their section in the Users file, then ran a /bp reload. It didn't actually fix the problem.

Which steps will reproduce this problem?:
1) Type /permissions convert

Do you have an error log of what happened?

06.08 09:56:18 [Server] INFO ... 14 more
06.08 09:56:18 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at de.bananaco.bpermissions.imp.Permissions.onCommand(Permissions.java:510) ~[?:?]
06.08 09:56:18 [Server] INFO at de.bananaco.permissions.ImportManager.importUuid(ImportManager.java:359) ~[?:?]
06.08 09:56:18 [Server] INFO at de.bananaco.bpermissions.api.World.remove(World.java:194) ~[?:?]
06.08 09:56:18 [Server] INFO Caused by: java.lang.NoSuchMethodError: java.util.Map.remove(Ljava/lang/Object;Ljava/lang/Object;)Z
06.08 09:56:18 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.7.0_72]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_72]
06.08 09:56:18 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_72]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1115) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
06.08 09:56:18 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'permissions' in plugin bPermissions v2.10.9
06.08 09:56:18 [Server] ERROR null

Which version of bPermissions are you using?: (Please don't say "latest"!!!)
v2.10.9m

Which version of CraftBukkit?: (Please don't say "latest"!!!)
1.8

Which OS?
Linux
Any other information we may need (plugins, configs, etc):
Because of the non-converted Users file, the entire permissions plugin is broken.

I was unable to reproduce the error, and honestly I can't see a scenario where removing a user from a map wouldn't work, as that's a core part of java.

However, I am able to provide you with a converted version of your users.yml - this is available at https://gist.github.com/rymate1234/a819cabf08437a70ef81

If there are any issues with this converted version, please feel free to reply to this ticket :)

@rymate1234: Go

Permissions are still broken, which was the original issue I'm trying to fix. Players only have access to limited permissions, and I spoke with one of the bPermissions staff, and he said the Users file was probably causing it, as it wasn't converted.

@NovitiumCraft: Go

Well, the users.yml I linked was your users.yml that I converted using the latest development version of bPermissions. If it still doesn't work, can you see whether wiping the users.yml and promoting users that need promoting will fix the issue?

Sorry I can't be of much better help, the idea of /permissions convert was that it would be used as soon as you upgraded to any bPermissions version with UUID support, as there's no backwards compatibility with usernames in the users.yml. As such, all usernames are ignored, which is probably why no permissions are working.

It's fixed now. I downgraded the version of bPermissions.