Ok, I seem to have fixed the issue. It seems to be a problem with the Technic Launcher since my modpack works just fine in any other launcher. I was able to fix the issue, however, by rolling back the Forge version to .2847 instead of .2854 as I had been previously using.
Essentially title, the modpack launches vanilla instead of with forge, not sure what to do
https://www.dropbox.com/s/t5gq8au2rmfn1ab/MX Blue Pack.zip?dl=1