Alright, so for the last 3 days, I have been having problem after problem with trying to get this modpack to load and be playable. Last monday, when it was released, I decided to try to run it. I only got as far as the Mojang logo before it crashed. Now I get as far as the Launcher, and it says that it couldn't download a file, as seen here. (personal information redacted for safety reasons)
This is the first, and only mod pack that I have had any troubles with. I tried the "Use beta builds" as seen in >this thread but I still get the "Could not download [filename].jar"