Mac ftbmonster 1.0.11 wont open on my iMac

[Diabiendo]

Can any one help me, for some reason i cant launch ftb monster 1.0.11 on my iMac but i can launch the previous versions. here the crash report i get in the console.http://pastebin.com/WBsQJSVi

 

[SatanicSanta]

[15:40:37] [INFO] LaunchFrame.main:186: Java version: 1.6.0_65

You need to use Java 7.