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Ok. Everytime I try and launch a modpack on the Technic Launcher, it just clears away like its going to play but just comes back to the launcher. This happens with every modpack and I just cant think what it could be? Security? Java? The launcher itself? If it's security or Java a step by step on how to fix it would be greatly appreciated. Thanks guys. Like to every Answer and 5 star rating to best!

Are there forge logs? If not, what do the launcher logs say?

No. No logs or error codes.No. No logs or error codes.

Open the launcher folder, and there should be a folder called "logs" inside it. Post what the most recent one says.

Ok gimme 5 mins

Wow. Now a new one. Here Ya Go.

0 mods loaded
Optifine OptiFine_1.2.5_HD_S_C6
Minecraft Forge 3.3.8.164
FML v2.2.106.176
Forge Mod Loader version 2.2.106.176 for Minecraft 1.2.5


Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem.




--- BEGIN ERROR REPORT 7061a0a2 --------
Generated 11/04/14 4:09 PM

Minecraft: Minecraft 1.2.5
OS: Windows 7 (amd64) version 6.1
Java: 1.7.0_45, Oracle Corporation
VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
LWJGL: 2.9.0
OpenGL: Intel(R) HD Graphics 4400 version 4.0.0 - Build 9.18.10.3220, Intel

java.lang.IllegalArgumentException: URI has an authority component
at java.io.File.<init>(Unknown Source)
at cpw.mods.fml.common.ModClassLoader.getParentSources(ModClassLoader.java:67)
at cpw.mods.fml.common.Loader.load(Loader.java:384)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:616)
at cpw.mods.fml.client.FMLClientHandler.onPreLoad(FMLClientHandler.java:200)
at net.minecraft.client.Minecraft.a(Minecraft.java:386)
at net.minecraft.client.Minecraft.run(Minecraft.java:738)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 62d205b2 ----------

Minecraft forge is crashing before any mods even get initialized. This should not be happening. Try removing the folder of the mod pack you were trying to use. If that doesn't work, try re-downloading the technic launcher. Also, you don't need to pm me about this, that's what this post you created is for.

None of these work :/ any other ideas?

I'm used to mods crashing, but it all relies on assuming that forge works without them. That lets me diagnose which mod is causing it, and why. If forge is causing the crash, I'm out of options. I suppose you could post about it on the technic pack forums though. They might be able to give you more support than me.

Attempt this:
go to your application data folder (%appdata%)
look for something that says techniclauncher (or something similar)
either delete or rename the folder
relaunch the technic launcher

Kusangii do i rename the launcher or the modpack?

This didn't work.