Mac Crash on mod pack startup

[quarkstar]

Operating System, bit type: OSX Mavericks
Java version/update, bit type: Both JDK and JRE at 7r51
Launcher version: 1.3.3
Completed the troubleshooting guide (y/n): y
Console log, pastebin.com link: http://pastebin.com/pit8AcR9
Description of the problem: I chose Direwolf20 1.6.4 pack, console pauses a moment at logging in, wall of text scrolls by on the console then it just auto quits.

 

[JamiePhonic]

run a force update. it seems you may be missing a required library

 

[quarkstar]

I tried running a force update. Didn't work.
I noticed that the bin folder in the minecraft folder was missing. So some lwjgl and the minecraft.jar file also went missing.
Seems like the launcher is not downloading some extra files after the mod pack download finishes.

 

[JamiePhonic]

it is, it downloads them elsewhere though. the bin folder is now in "<FTB INSTALL LOC>\Versions" and the natives are in "<FTB INSTALL LOC>\<MODPACK NAME>\natives"

what you need to check is if you have "<FTB INSTALL LOC>\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar