This is a common issue for all te Windows users. We use Apple Mac to develop all the products, so probably sometimes there is incompatibility with a .zip folder created with Mac and unzipped with Windows.
Don't worry, we found an easy solution.
Simply download 7zip software (which is free) and unzip the folder using it and not the stock Windows unzipper.
Magically you will see al the files inside the unzipped folder :)
