Opening Timer GUI Crashes

[8BitLoser]

Everytime I try to open the Timer GUI my game crashes. Now I can tell what crashes my game about 99.5% of the time but this time I cant figure it out. And I cant go taking away 1 mod at a time till i figure it out since i have 60 of them.

I use the DW20 pack, BUT, I import it to multiMC then update mods manually as i see fit. The error I get is a Null Pointer Exception.

Heres the crash report.
----------------------------------
http://pastebin.com/LiWccWq0
----------------------------------

Any help?

 

[Woif]

Make sure you aren't holding a block that can be placed when you try to. I've crashed when I right click on the GUI and holding something like cobble and whatnot. Empty hand or something that isn't placed in the world, and I'm alright.