"Internal error while attempting to perform command" MCPC+

[shadoowner]

Hey, i installed dynmap on my server, i have MCPC+ so i put it in the mod folder.
It does install the mod but when i type /dynmap fullrender or any other dynmap commands it says:
"An internal error occured while attempting to perform this command".
http://gyazo.com/357ddbe1f8bffad484fd0bd1b4758c46
I have the right port set cuz i can open it in my browser and see where i am on the map.

The console error i get:
http://pastebin.com/ZxfJ4b5r

plugins installed:
http://gyazo.com/701719c66753b34f50b22a8e1d027209

Mods installed:
Pixelmon 2.5.2
NBTEdit
Dynmap

MC version:
1.6.4

[shadoowner]

s45.hosthorde.com:9328 is the IP, thats the only output i get, it renders small parts of the map not the complete map and ingame commands dont work

[AmauryCarrade]

Hello,
I have this exact same problem, with Minecraft 1.6.4, MCPC+ version git-MCPC-Plus-jenkins-MCPC-Plus-164-250 (MC: 1.6.4) (Implementing API version 1.6.4-R2.1-SNAPSHOT), on Ubuntu 12.10 desktop, with Java 1.7.0_51.

The log in the console is:

>dynmap updaterender
21:40:32 [AVERTISSEMENT] Unexpected exception while parsing console command "dynmap updaterender"
org.bukkit.command.CommandException: Unhandled exception executing command 'dynmap' in plugin dynmap v1.9.3-964
        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.dynmap.bukkit.DynmapPlugin.onCommand(DynmapPlugin.java:953)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
        ... 8 more

And the same error is received with /dynmap <anything here>.

[AmauryCarrade]

Possible solve: I noticed I had two versions of dynmap (the bukkit plugin AND the couple Forge/Bridge). Removing the bukkit plugin solve the problem.

[mikeprimm]

Yep - that will happen if two copies are present.