When I create a new world the game crashes and I have not added any mods.
I have tried:
Reinstalling Modpack
Different Java versions
Adding a normal world manually
Disabling different mods one by one
Changing In-game settings
Adjusting Ram

Crash report ...

Please post your crash report. See here for how to: www.mym.li/crash

The problem with that is that the game freezes and goes white and wont recover so no crash report get generated. I have left it for over 10 hours hoping it would load up but it wouldn't.

http://wiki.mym.li/en/latest/Knowledge_Base/debug.html#performance-threads
The threads section would be the applicable one.