Mac Modpacks Fail to Startup

[MrPancakes]

Upon tryin' to load Monster or Direwolf20 1.6.4, I keep getting an error message that says "Error: Could not find or load main class set".
Now as far as I can tell after trying to research this, the solution I've seen is to update your java to the most update version, well I've done that but it's still giving me the same error.
I'm using Java 7 version 45 and FTB Launcher v1.3.3 with both modpacks set to "Recommended"

Advanced settings are 3 GBs allocated and increase to max Permgen size at 256mb

 

[UniZero]

I would suggest going through the basic troubleshooting guide linked below then, if you still require help, follow the second link regarding logs. Post your reply in the format requested here.

http://desk.feed-the-beast.com/inde...ticle/View/54/0/basic-troubleshooting-updated
http://forum.feed-the-beast.com/threads/your-logs-and-you-what-you-need-to-know.36509/

 

[MrPancakes]

Operating System and bit type: Mac OS X Maverick 64 Bit
Java version/update and bit type: Java version 7 update 45
Launcher version: 1.3.3
Console log, pastebin.com link: http://pastebin.com/QF8Evskt
Description of the Issue: None of the modpacks fail to start up do to an error that pops up that says "Error: Could not find or locate main class set."

 

[NEXUS2345]

Follow this guide, it will fix it: http://desk.feed-the-beast.com/inde...ticle/View/54/0/basic-troubleshooting-updated