Hello,
The download links for the FTB packs is moved over to http://soartex.net/downloads/ftb/ .
You can also use the Soartex Patcher from http://soartex.net/texture-patcher/ .
Eric Martin, the best place to get the updated Soartex is to download from this post or go to Soartex forum. Go to http://soartex.net/ and under Download.