Error trying to rejoin my server

[KingMinecrafter]

Title: Error trying to rejoin my server

Version: 3.0.3/3.0.4

OS: Windows 7

Java Version: Newest

Description of Problem:

I get this error messsage when i try to join it

Error Messages:

internal exception: java.lang.NullPointerException

This comes up when i join my server, i was on for 30 minutes and i got this message like i got kicked tried to rejoin same message, tried to reinstall tekkit, turn on and off my computer, my router, my server, but my friend is still on it and he got kicked first

Error Log:

internal exception: java.lang.NullPointerException



This comes up when i join my server, i was on for 30 minutes and i got this message like i got kicked tried to rejoin same message, tried to reinstall tekkit, turn on and off my computer, my router, my server, but my friend is still on it and he got kicked first

[Painfull]

That happens on server if you're Item ID's aren't the same as the servers. And you have a item with a ID conflict.