Good sir, I taken the files from forge, placed them into a new zip, compressed, renamed to modpack.jar, and that being the jest of most of the touristic incites I remain in this status quo- a non functioning modpack.jar.
And to answer your cut and paste response, as noted in http://forums.technicpack.net/threads/modpack-jar-fails-to-work-just-vanilla.44930/;
I followed the guides on these forums, as well as the technic site.
I am not getting an error code, just a failure on the part of forge to load the mods/load at all.
Attempts, I would estimate 3 per configuration suggested by each guide, as well as 20+ trail and errors attempts.
Winzip/winrar/7z.
File extensions are visible.
The name verbatim, "modpack.jar"
I have compressed and compressed and always I have nothing to wine about.