I was having data corruption problems on my internal HD. Thought I’d reinstall Lion before thinking of new HD. That problem was solved.
Being beyond reach of Wi-Fi, I thought to create a bootable external HD as insurance. I followed the steps in your article at “//www.makeuseof.com/tag/install-osx-lion-external-drive-test-mac/ “, located OSinstall.mpkg from the previous download & attempted to install. Then I receive the message “Installer can’t find the data it needs to install.”