Yesterday i upgrade to the new unleashed and everything was working fine and dandy. But today when i try to launch the ftb unleashed and enter my world that was created during beta unleashed(which worked fine yesterday). I see that disabling chicken chunks did not help, but i can still create new world but cannot play my old world. I really don't want to start over again because i have faced this problem before. I used these java parameter --XX:MaxPermSize128m and 2gb of ram.
Here crash log http://pastebin.com/utYz8Rt1
Here crash log http://pastebin.com/utYz8Rt1