Tekkit classic crashes repeatedly!

[Bug Noob]

Title: Tekkit classic crashes repeatedly!

Version: 3.1.3

OS: Windows 7 Home Premium

Java Version: 1.6.0

Description of Problem:

Tekkit classic crashes repeatedly. What shall I do!?

Error Messages:

--- BEGIN ERROR REPORT 40a994d8 --------

Generated 1/11/13 7:34 PM

Minecraft: Minecraft 1.2.5

OS: Windows 7 (amd64) version 6.1

Java: 1.6.0_33, Sun Microsystems Inc.

VM: Java HotSpot 64-Bit Server VM (mixed mode), Sun Microsystems Inc.

LWJGL: 2.4.2

OpenGL: Intel® HD Graphics version 2.1.0 - Build 8.15.10.2353, Intel

java.lang.NullPointerException

at java.util.Hashtable.put(Unknown Source)

at forge.MinecraftForge.setGuiHandler(MinecraftForge.java:1107)

at mod_CompactSolars.load(mod_CompactSolars.java:34)

at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:356)

at cpw.mods.fml.common.Loader.modInit(Loader.java:273)

at cpw.mods.fml.common.Loader.initializeMods(Loader.java:628)

at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)

at net.minecraft.client.Minecraft.a(Minecraft.java:429)

at net.minecraft.client.Minecraft.run(Minecraft.java:738)

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

--- END ERROR REPORT 40846bf6 ----------

Error Log:

Tekkit crashes. Possible bug?