Item 166 Error

[MikeyMatou11]

Title: Item 166 Error

Version: 3.0.3/3.0.4

OS: Windows 7 64Bit

Java Version: Java 7

Description of Problem:

On a server I saw a item called 166 on the ground. Really it was invisible, but when I tried to spawn it (I am the server OP), I was disconnected from the server. When I try to join again I cant.

Error Messages:

When I try to join it says: java.lang.NullPointerException

Error Log:

[xgermz]

Currently getting the same error on 3.1.2

[uradox]

It's to do with Buildcraft pipes. Have the server owner delete your player.dat file and you will be able to join again.

[Keanobullen]

Is there a way to do it yourself because i have 3 files that have player .dat so i wanna know which 1 it would be:

Stats_player_unsent .dat

Tablet_player.dat

and another Tablet_player.dat

thanks