Download and Install Tekkit Texture Pack for Minecraft 

Since the automatic link above is misleading.  You do not need any fixes.  Tekkit already includes all you need.

Tekkit Texture Pack Installation:

Notice: Download and Install Optifine or MCPatcher for 32× and higher texture pack.

  • Download the texture pack from the link provided below
  • Go to Start Menu > Type %appdata%/.minecraft/texturepacks
  • Open the “texture packs” folder and move the downloaded zip file into this folder
  • Close tabs, run Minecraft and enjoy the texture

For 1.5

For 1.4

Credits: kyctarniq