Can't Launch Minecraft

[GotArrow1103]

Hellow there..

My FTB can download the mods but can't launch it.. why is it happen?? is there any solution about this? (I'm using Mac)

 

[jikuja]

I recommend using http://support.feed-the-beast.com/ and adding full console log: http://support.feed-the-beast.com/t/finding-the-logs/43