Technic Launcher will not launch any modpacks except the vanilla one.

[CGInteract]

So just recently I Installed Technic Launcher, and installed a couple of mod-packs. The only problem though is when I go to launch one of them by clicking the play button, the launcher disappears and then re appears without opening the game. I've tried re-installing the mod-packs and try again. Nothing. Also side note the vanilla one works fine for whatever reason.

Here's a pastebin of the log output: https://pastebin.com/D6bXjr0K

[CGInteract]

Re-installed it, so it works now.

[JaariAtmc]

Looks like a Forge library wasn't downloaded properly during the modpack download/installation.