It did install, but gave some strange reactions after the upgrade on both 7.1.4 and 7.1.5. Unpacks the data, runs the scripts and then just whitescreens as if there were a permissions error. Navigating to the home page seems to get it working again, but have to reload the page to clear up some non-loading header issues.
It’s running on a disposable clone, so trashing it and starting up a working 7.1.4 to upgrade from is not an issue.