Hello,
To install versions in one click you need to install base demo content first (products/posts/projects). If you don’t want to do this you can install versions manually using xml files import http://xstore.helpscoutdocs.com/article/34-demo-content Also you need to import options (copy code from options.json and import in Theme options > Import > Options) and slider (Revolution Slider > Import).
XML files you can find here https://www.8theme.com/download-plugins/
Also there you can find all the necessary plugins for the manual installation if auto installation does not work for you, as a rule, it’s related to the server settings.
Regards