Whenever i try to activate the free science the game crashes on restart with message

attempt to index global 'wormmusspacesciencepack'{a nil value}

I am using
RSO
EvoGUI
Noxys waterfill
Angel's infinite ore

together with this mod

EDIT:
I tried deactivating all other mods and just activating the free science option from this mod and the game crashed on restart

Will fix when I get home. Probably just a piece of misplaced code. Enable space science pack to fix for now.

Fixed in 1.5.1

Thank you for the quick fix. You rock!

You're welcome