sbbg; I am pretty sure you did not follow my instructions. I just clone the 4.15.2 version of UE4 and add the changes exactly as stated in my comments.
UE4 4.15.2 no longer crashes when you access the project settings … just in case the formatting of this blog could have cause what should have been a simple cut and paste, here is alternate source of my instruction can be found here http://www…com/unreal-engine-4-crash-upon-project-settings/
Best of luck