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Please help me as I am trying to play Tekkit. I launch tekkit classic and after it gets to Mojang it crashes with this error report

Generated 9/16/13 6:08 PM

Minecraft: Minecraft 1.2.5
OS: Windows 7 (x86) version 6.1
Java: 1.7.0_21, Oracle Corporation
VM: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
LWJGL: 2.4.2
OpenGL: GeForce 9800 GT/PCIe/SSE2 version 3.3.0, NVIDIA Corporation

org.lwjgl.opengl.OpenGLException: Invalid operation (1282)
at org.lwjgl.opengl.Util.checkGLError(Util.java:56)
at org.lwjgl.opengl.Display.swapBuffers(Display.java:645)
at net.minecraft.client.Minecraft.v(Minecraft.java:509)
at net.minecraft.client.Minecraft.a(Minecraft.java:403)
at net.minecraft.client.Minecraft.run(Minecraft.java:738)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 48556071 ----------