Open 1.1.0: FTB Infinty Crashes When Opening Singleplayer world

[MCLord_Doom]

Version:
1.1.0

What is the bug:
I have downloaded the FTB launcher and started playing Infinty yesterday. Today when I tried to go back onto my world the computer usage goes up to 100% for a few seconds and then it crashes... Can anyone help me fix this so I can play more FTB please? And hopefully after this bug is fixed I will be able to record FTB and post it on YouTube.
Thx
-MCLord_Doom

Mod & Version:


Paste.feed-the-beast.com log:


Can it be repeated:
All I have to do to repeat this is open the launcher and try to open the game again and it crashes

Known Fix:

 

[Kurama]

Crashlog.. Where are thy, Crashlog?

 

[MCLord_Doom]

Here it is... Sorry

 

[buggirlexpres]

Try force updating the pack. It appears a .json file got messed up somewhere, redownloading the pack should fix it.

 

[MCLord_Doom]

How would I redownload the pack? I am really bad at mods but an expert at vanilla

 

[buggirlexpres]

Hit the "Force Update" button in the Options tab, then launch the pack you are updating.