Modpack only launches in Vanilla

[OxidationElite]

I'm trying to create a modpack, and everytime I launch it or reinstall it with mods, no matter how many, it always launches in Vanilla. I've looked at the file when it's installed and the mods show that they're in the folder, but it refuses to load them when you launch the pack. Can i get some help?

https://www.technicpack.net/modpack/urg-testrun.1733414 

https://www.dropbox.com/s/hpg9ei17ijd9hhv/Modpack.zip?dl=0

And before anyone says it, I do change the Dropbox link to Dl=1 every time and I have tried the "dl.dropboxusercontent" version as well, nothing works.

[Lord Ptolemy]

Moved to Platform Pagoda.