superskypie

help me please!!!!!!!

Title: whaen i log onto a server it does the normal thing and then it just blank screens Version: 3.1.2 OS: O SX mountain lion Java Version: java 7 version 9 Description of Problem: i log onto tekkit and i log onto the server i usually go on and when i go on it just freezes and a blank screen comes up and no error log comes up Error Messages: doesn't come up with one Error Log: [18:59:52] [sEVERE] 2012-10-22 18:59:52 [sEVERE] A critical error has occurred. java.lang.NullPointerException at um.a(SourceFile:28) at tw.a(RenderItem.java:129) at tw.a(RenderItem.java:415) at ahu.a(RenderManager.java:188) at ws.a(SourceFile:64) at cw.b(EffectRenderer.java:172) at lr.a(EntityRenderer.java:1354) at lr.b(EntityRenderer.java:1052) at net.minecraft.client.Minecraft.x(Minecraft.java:876) at net.minecraft.client.Minecraft.run(Minecraft.java:753) at java.lang.Thread.run(Thread.java:680)