What OS are you using? Perhaps you should go into tekkit before adding the pack and finding where is the texturepack folder located (Click on Texture packs button and then on open texture pack folder). Then try to copy it there. But this thread and this pack is outdated go download the latest one here:

Ummmm... DERP! He deleted META-INF! The TechnicPack comes with its own version of minecraft, in which meta-inf is already deleted. He is trying to move the tekkit files into his .minecraft folder! HAHA

i followed the instructions, the technic launcher loads properly but when i open tekkit, it goes to a white window.

Hey man, using 64x. It's awesome! However, there is a glitch where most of the textures for the mod Nuclear Control are missing. I just get invisible items when I try to get, for example, an industrial information panel.

This is a outdated version. Get latest one here:
http://bdcraft.net/forum/128x64x32x-tekkit-smp-312-addon-pack

hey i did everything i found answers to my problems from other comments and now it comes up as a proper texture pack, my only problem is now it gets to the mojang loading screen and fezzes, it douse not get any further

Hi, I have an silly issue with the texture pack. I have combined both zip files into one but whenever I try to load my texture pack, the whole program just crash and closes, does any1 have the same issue that can help me?

YEP! I got it right here! Just PM me and I will send you a link.

When i download the texture pack in texturepacks its a black and white version
of default it has default textures for minecraft but sphax textures for the things added in tekkit can someone please help.