I’m having the same issue. Your article doesn’t address the problem that the demo data simply doesn’t import.
I’ve increased my php memory and attempted to import demo content a number of times. I have waited patiently until it times out and ends up with a 404 error with the following in the url:
wp-admin/admin.php?import=swiftdemo&step=1&demoid=0&democontent=yes&themeopt=yes&coloropt=yes&widgetopt=yes
