Can't install Sydney Demo

I receive this alert when attempting to publish the demo:

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10): Unable to find End of Central Dir Record signature.

I really need the demo for the kick start.

Thank you.

The demo content goes to Tools > Import > WordPress, as it is written on the documentation page :slight_smile: You’re probably trying to install it as a theme.