cant join MY server but other people can

[dxxmage]

Title: cant join MY server but other people can

Version: 3.1.2

OS: 64 bit-Windows Vista

Java Version: 7 update 9

Description of Problem:

I can't get into MY server the 1st time i tried it worked but now i cant get back in.Anybody else can get into it but when i login nd i click on the server it says "loging in" then goes blank,then black,then grey,then lags out and the server says that i lost connection due to generic reason

Error Messages:

it dissapears to quick to read it

Error Log:

19:15:33] [sEVERE]	java.lang.NullPointerException

[19:15:33] [sEVERE]		at um.a(SourceFile:34)

[19:15:33] [sEVERE]		at fe.a(SourceFile:185)

[19:15:33] [sEVERE]		at fe.a(SourceFile:76)

[19:15:33] [sEVERE]		at ix.a(SourceFile:18)

[19:15:33] [sEVERE]		at ix.a(SourceFile:6)

[19:15:33] [sEVERE]		at ahu.a(RenderManager.java:188)

[19:15:33] [sEVERE]		at codechicken.nei.SpawnerRenderer.renderInventoryItem(SpawnerRenderer.java:53)

[19:15:33] [sEVERE]		at codechicken.nei.SpawnerRenderer.renderItem(SpawnerRenderer.java:72)

[19:15:33] [sEVERE]		at forge.ForgeHooksClient.renderInventoryItem(ForgeHooksClient.java:405)

[19:15:33] [sEVERE]		at tw.a(RenderItem.java:276)

[19:15:33] [sEVERE]		at aiy.a(GuiIngame.java:756)

[19:15:33] [sEVERE]		at aiy.a(GuiIngame.java:333)

[19:15:33] [sEVERE]		at lr.b(EntityRenderer.java:1087)

[19:15:33] [sEVERE]		at net.minecraft.client.Minecraft.x(Minecraft.java:876)

[19:15:33] [sEVERE]		at net.minecraft.client.Minecraft.run(Minecraft.java:753)

[19:15:33] [sEVERE]		at java.lang.Thread.run(Unknown Source)

[19:15:33] [sEVERE]	java.lang.NullPointerException

[19:15:33] [sEVERE]		at um.b(SourceFile:313)

[19:15:33] [sEVERE]		at ahu.a(RenderManager.java:189)

[19:15:33] [sEVERE]		at codechicken.nei.SpawnerRenderer.renderInventoryItem(SpawnerRenderer.java:53)

[19:15:33] [sEVERE]		at codechicken.nei.SpawnerRenderer.renderItem(SpawnerRenderer.java:72)

[19:15:33] [sEVERE]		at forge.ForgeHooksClient.renderInventoryItem(ForgeHooksClient.java:405)

[19:15:33] [sEVERE]		at tw.a(RenderItem.java:276)

[19:15:33] [sEVERE]		at aiy.a(GuiIngame.java:756)

[19:15:33] [sEVERE]		at aiy.a(GuiIngame.java:333)

[19:15:33] [sEVERE]		at lr.b(EntityRenderer.java:1087)

[19:15:33] [sEVERE]		at net.minecraft.client.Minecraft.x(Minecraft.java:876)

[19:15:33] [sEVERE]		at net.minecraft.client.Minecraft.run(Minecraft.java:753)

[19:15:33] [sEVERE]		at java.lang.Thread.run(Unknown Source)

[19:15:44] [sEVERE]	2012-12-07 19:15:44 [sEVERE] A critical error has occurred.

java.lang.NullPointerException

	at um.b(SourceFile:313)

	at ahu.a(RenderManager.java:189)

	at codechicken.nei.SpawnerRenderer.renderInventoryItem(SpawnerRenderer.java:53)

	at codechicken.nei.SpawnerRenderer.renderItem(SpawnerRenderer.java:72)

	at forge.ForgeHooksClient.renderInventoryItem(ForgeHooksClient.java:405)

	at tw.a(RenderItem.java:276)

	at aiy.a(GuiIngame.java:756)

	at aiy.a(GuiIngame.java:333)

	at lr.b(EntityRenderer.java:1087)

	at net.minecraft.client.Minecraft.x(Minecraft.java:876)

	at net.minecraft.client.Minecraft.run(Minecraft.java:753)

	at java.lang.Thread.run(Unknown Source)

[jp694]

maybe try deleting your player dat in the server

[Magister]

i would suggest backing up your player data and then deleting it

if you are able to connect just fine then you may have an item id conflict, as i know it causes that error

[XdeathringzX]

easy fix

you have not updated your client to 3.1.3

on the title screen open up options

then change your update to 3.1.3

[Zebz213]

Try updating tekkit server software to 3.1.3 and make sure you are not puting all your ram into the server and make sure you have around 3gb ram for yourself.

[Cheesekillsu]

Its happening to me, but i'm not the owner of the server, what can i do?