It first was the same for me. After starting the launcher as Admin (Windows) it was able to pull the files it needed. (Seems to be an issue with 'C:\Program Files(x86)' and the permission that is needed for that path)
I saw this on YouTube the other day. Then over here on the browse page as well. Looks intimidating. Have to finally try this out. Looks Fun :3
EDIT: Very Fun, but really hard. Love it <3
