it actually fail on all mod packs here is my log
[17:59:31] [sEVERE] ------------------------------------------
[17:59:31] [sEVERE] Launcher is starting....
[17:59:31] [sEVERE] Launcher Build: '0.5.4.6'
[17:59:31] [sEVERE] Allocated 910.25 Mb of RAM
[17:59:31] [sEVERE] Java VM: '1.7.0-b147'
[17:59:31] [sEVERE] OS Version: '6.1'
[17:59:31] [sEVERE] Is 64-bit: 'true'
[17:59:31] [sEVERE] [info] Downloading 'mirrors.yml' from 'http://git.technicpack.net/Technic/mirrors.yml'.
[17:59:32] [sEVERE] Starting download of 'http://mirror.technicpack.net/Technic/CHECKSUM.md5', with 3 trie(s) remaining
[17:59:32] [sEVERE] Copying: \temp\file8233941674247891993.tmp to: \launcher\CHECKSUM.md5
[17:59:32] [sEVERE] File Downloaded: \launcher\CHECKSUM.md5
[17:59:33] [sEVERE] [MD5 Mismatch] File '\launcher\yogbox\modpack.yml' has md5 of '04ed9a507a6398ceaaebb2ac945dcad6' instead of '7e1f7a92e093b7b29e2e9ed7b15e6e9c'
[17:59:33] [sEVERE] [info] Downloading 'modpack.yml' from 'http://mirror.technicpack.net/Technic/yogbox/modpack.yml'.
[17:59:33] [sEVERE] [info] Downloading 'minecraft.yml' from 'http://mirror.technicpack.net/Technic/minecraft.yml'.
[17:59:41] [sEVERE] [MD5 Mismatch] File '\launcher\tekkit\modpack.yml' has md5 of '244625154658eff17ff9ea9ec5fc23a1' instead of 'f366842abf3d6697ad34f07a2ca70173'
[17:59:42] [sEVERE] [info] Downloading 'modpack.yml' from 'http://mirror.technicpack.net/Technic/tekkit/modpack.yml'.
[17:59:42] [sEVERE] [info] Downloading 'minecraft.yml' from 'http://mirror.technicpack.net/Technic/minecraft.yml'.
[17:59:43] [sEVERE] Starting download of minecraft, with 3 trie(s) remaining
after about 9- 86 % it stops and says download failure i run windows 7 64 bit system any help and please make it into the old way with an instaler it was less buggy
thx before answered emiil