I appreciate hard work you have done. But may I say that I think this particular line should be expressed as:
For Windows put this file on: C:\Users\USERNAME\AppData\Roaming\UFO
or
For Windows put this file on: C:\Users\%username%\AppData\Roaming\UFO

You know, I don't have a Windows user account name 'itos' in my Windows machine 

Once again: great job done itos & co!