i have a similar problem but i use ModStation, not a mod pack. the executable has been moved to bin/1491147/bin64 (assuming a 64bit system). i've tried and tried, but ModStation does not recognize the 0.8.3.1 executable. i know its the right one, cuz i can double-click it and launch WoWs. tried re-naming it, but doesn't make a difference. maybe you'll have better luck with Aslain's Modpack, i'd like to know if you get it to work.