Setup on Windows 10 (Source)

Hello there!

Im trying to get Unreal Engine 4.7 set up on my Windows 10 computer. However, I can’t even run the Setup.bat included in the repository properly, GitDependencies always crashes with the error “File already exists” with no hints to do whatsoever.
I already created a post on the AnswerHub yesterday but didnt receive any answer yet, which is why im posting here too.

Image of my error: