Hi, I thought I'd try out this plugin on my newly started Tekkit Server.

I first had the other 'Null Pointer Exception' when trying to fire up the server, but read that it was fixed and realized I hadn't gotten the latest build silly me.
So got hold of: LyTreeHelper-3.0beta-build-2
And the thing starts without any complaints.
It doesn't say '-build-2' in the server console when loading the plugin... but that's just cosmetica, right? ;p

Ok, enough with the chattering, onward to the problem!

Whenever my client breaks a woodblock I it gets disconnected saying:
Disconnected by Server
Internal server error

And this is the server console output:

[WARNING] Failed to handle packet: java.lang.NullPointerException java.lang.NullPointerException
at net.minecraft.server.ItemInWorldManager.breakBlock(ItemInWorldManager.java:249)
at net.minecraft.server.ItemInWorldManager.a(ItemInWorldManager.java:179)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:548)
at net.minecraft.server.Packet14BlockDig.handle(SourceFile:43)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:119)
at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:83)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:579)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Btw, that is posted from my work computer with an unstable but fresh out of the box Windows XP Tekkit 3.1.2 server MC-version 1.2.5.
...well, the comp ain't fresh but the Tekkit server pack is ;p

However I get the same sympthoms on my Linux server at home which so far (the few day's it's been up) seems stable (without LyTreeHelper).

After the exception is thrown the server continues to run and I can reconnect the client and pick up the single dropped woodblock, but the same thing reaccures whenever the client breaks a woodblock.

Just thought I'd let you know so it doesn't scare off other ppl trying to use this plugin having it crashing their clients.

Right now I'm using another treemod on my server, but I really liked the description and the potential of this and would love get it up and running on my server.

Well good luck and hope to hear from you ;)