On Mac OSX, I dug a little more and this is the kind of log I get:
MoveFile was unable to move ‘/Users/Shared/UnrealEngine/…SomeFiles’ to ‘/Volumes/myDisk/Username/Documents/Unreal Projects/…SomeFiles’, retrying in .5s…
This is why the install fails every time. Do you have a workaround for this?
I already have my home directory on an other disk and I don’t plan on putting everything back into the system, it would be a mess…