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Can someone tell me whats wrong?

Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem; Failed to start game
A full error report has been saved to C:\Users\Owner\AppData\Roaming\.minecraft\crash-reports\crash-2012-12-16_13.53.29-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash

--- BEGIN ERROR REPORT 72fe0197 --------
Full report at:
C:\Users\Owner\AppData\Roaming\.minecraft\crash-reports\crash-2012-12-16_13.53.29-client.txt
Please show that file to Mojang, NOT just this screen!
Generated 16/12/12 1:53 PM
-- System Details --
Details:
Minecraft Version: 1.4.5
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.6.0_31, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
Memory: 448379816 bytes (427 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v7.23 FML v4.5.2.459 Minecraft Forge 6.4.0.395 Optifine OptiFine_1.4.5_HD_U_D7 20 mods loaded, 20 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized
mod_ReiMinimap [mod_ReiMinimap] (minecraft.jar) Unloaded->Constructed->Pre-initialized
mod_Timber [Timber!] (minecraft.jar) Unloaded->Constructed->Pre-initialized
mod_SmartMoving [Smart Moving] (minecraft.jar) Unloaded->Constructed->Pre-initialized
mod_SmartRender [Smart Render] (minecraft.jar) Unloaded->Constructed->Pre-initialized
mod_GuiAPI [mod_GuiAPI] (minecraft.jar) Unloaded->Constructed->Pre-initialized
EnchantChanger [EnchantChanger] (%5B1.4.5%5DEnchantChanger1.4d.zip) Unloaded->Constructed->Pre-initialized
AtmosMobs [Atmosmobs mod] (AtmosMobsv1.2.0.zip) Unloaded->Constructed->Pre-initialized
mod_coral [Nandonalt's CoralMod] (coral-reef-1.4.5b.zip) Unloaded->Constructed->Pre-initialized
mod_CoralReefGUI [CoralReef GUI] (coral-reef-1.4.5b.zip) Unloaded->Constructed->Pre-initialized
CustomSpawner [DrZhark's CustomSpawner] (CustomMobSpawner 1.9.2.zip) Unloaded->Constructed->Pre-initialized
DamageIndicatorsMod [Damage Indicators] (DamageIndicators[1.4.5]2.1.8.1.zip) Unloaded->Constructed->Pre-initialized
DragonMounts [Dragon Mounts (WIP)] (dragonmount_v0.9pre4_mc1.4.4_forge.zip) Unloaded->Constructed->Pre-initialized
MoCreatures [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v4.3.1.zip) Unloaded->Constructed->Pre-initialized
ExtrabiomesXL [ExtrabiomesXL] (ExtrabiomesXL-universal-1.4.5-3.6.0a.zip) Unloaded->Constructed->Errored
TwilightForest [The Twilight Forest] (twilightforest-1.13.1 (1).zip) Unloaded->Constructed->Pre-initialized
weaponmod [Balkon's WeaponMod] (Weaponmod.zip) Unloaded->Constructed->Pre-initialized
WitchesandMore [Witches and More....] (WitchesandMore145 V108.zip) Unloaded->Constructed->Errored
LWJGL: 2.4.2
OpenGL: Intel(R) HD Graphics GL version 2.1.0 - Build 8.15.10.2226, Intel
Is Modded: Definitely; Client brand changed to 'forge,fml'
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
java.util.UnknownFormatConversionException: Conversion = 'D'
at java.util.Formatter$FormatSpecifier.conversion(Unknown Source)
at java.util.Formatter$FormatSpecifier.<init>(Unknown Source)
at java.util.Formatter.parse(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.lang.String.format(Unknown Source)
at cpw.mods.fml.relauncher.FMLRelaunchLog.log(FMLRelaunchLog.java:183)
at cpw.mods.fml.common.FMLLog.log(FMLLog.java:12)
at cpw.mods.fml.common.FMLLog.severe(FMLLog.java:22)
at cpw.mods.fml.common.LoadController.transition(LoadController.java:97)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:481)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:151)
at net.minecraft.client.Minecraft.a(Minecraft.java:424)
at net.minecraft.client.Minecraft.run(Minecraft.java:756)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT c9e24f6d ----------

I'm getting almost the same error as you...