I get an error trying to update Membership. Can you help me?

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

The site is a single site, not MU. It is hosted on WPEngine. Everything else is up to date, WP and all plugins. I am testing on a WPEngine staging site.

Is this a bug, or is their something in my configuration I should be checking?