Custom Modpack Crashing - Need Help!

[IGravemind]

Hey there everyone,

Stitched together a modpack of some of my fav mods and the download/extraction goes okay... I think.

Why I go to play however, it will launch up - and flicker to close down the client where the mojang screen would show.

I do not know what is causing the error so I tried closed technic down and opening it up again to try lunching my modpack again and the same thing happened.

The Error Report for the first crash:

---- Minecraft Crash Report ----

// Who set us up the TNT?

Time: 14/12/13 15:45

Description: Initializing game

java.lang.NoSuchFieldError: a

at atv.R(SourceFile:484)

at atv.O(SourceFile:326)

at atv.d(SourceFile:599)

at net.minecraft.client.main.Main.main(SourceFile:101)

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

-- Head --

Stacktrace:

at atv.R(SourceFile:484)

at atv.O(SourceFile:326)

-- Initialization --

Details:

Stacktrace:

at atv.d(SourceFile:599)

at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --

Details:

Minecraft Version: 1.6.4

Operating System: Windows 7 (amd64) version 6.1

Java Version: 1.7.0_45, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 91317040 bytes (87 MB) / 128974848 bytes (123 MB) up to 1908932608 bytes (1820 MB)

JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2048m -XX:MaxPermSize=256m

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: No suspicious classes found.

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

Launched Version: 1.6.4

LWJGL: 2.9.0

OpenGL: GeForce GT 630/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation

Is Modded: Very likely; Jar signature invalidated

Type: Client (map_client.txt)

Resource Pack: Default

Current Language: English (US)

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

The Error Report for the second crash:

---- Minecraft Crash Report ----

// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 14/12/13 15:45

Description: Initializing game

java.lang.NoSuchFieldError: a

at atv.R(SourceFile:484)

at atv.O(SourceFile:326)

at atv.d(SourceFile:599)

at net.minecraft.client.main.Main.main(SourceFile:101)

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

-- Head --

Stacktrace:

at atv.R(SourceFile:484)

at atv.O(SourceFile:326)

-- Initialization --

Details:

Stacktrace:

at atv.d(SourceFile:599)

at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --

Details:

Minecraft Version: 1.6.4

Operating System: Windows 7 (amd64) version 6.1

Java Version: 1.7.0_45, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 91703600 bytes (87 MB) / 128974848 bytes (123 MB) up to 1908932608 bytes (1820 MB)

JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2048m -XX:MaxPermSize=256m

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: No suspicious classes found.

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

Launched Version: 1.6.4

LWJGL: 2.9.0

OpenGL: GeForce GT 630/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation

Is Modded: Very likely; Jar signature invalidated

Type: Client (map_client.txt)

Resource Pack: Default

Current Language: English (US)

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

I would be very grateful to anyone that can shed light on this issue.

Thanks in advance!

~ IGravemind