The SilverStripe Framework is missing - To run the installer, at least the 'framework' module and the 'simple' theme are required
If you downloaded a pre-packaged zip or tar.gz, something might have gone wrong with the packaging process. Please try re-downloading, or try an older version
If you downloaded this from github, you need to install the 'framework' and 'simple' theme code bases in subdirectories of this directory. You can do this manually, or by running the tools/new-project script from the command line