I wanted to try Horizons and downloaded it, when it was finished i pressed launch then i get this http://pastebin.com/hmM1P3Pc in the console and nothing happens. Launch button is greyed out.
I tried the Direwolf20 modpack aswell and i got the same problem after i downloaded it.
I tried the Direwolf20 modpack aswell and i got the same problem after i downloaded it.