installing mariculture 1.2.3d and hardcore ender expansion 1.6.2 will cause a crash
the crash log is here: http://pastebin.com/xYBsic1t

disabling the hee compatibility module 'fixes' this crash
to be honest, i had no idea what that disables :/

okay. i wasn't sure whether or not it was fixed considering how obvious it was (i found it. i suck at bug testing) and couldn't find it in the jenkins changelog

This was fixed in the dev versions a while ago. All it disables is the possibility of using endergoo as the liquid for ender droplets aka nothing if you have TE or Tinkers.