Before trying or downloading the script, I gone through all the comments posted here so that I didn't want to spare my time wasting for anything which doesn't work quite well. So, after going through all the comments here, I came to know that someone mentioned about non working of the demo install due to licence check. and someone replied a solution to install the older version of this theme where demo was manual method. So I downloaded 2.7.8.9 because in 2.7.9 changelog its mentioned that the theme demo is automated with licence. But after installing 2.7.8.9 I came to know that the setup zip doesnt have the manual demo xml files in it. So I tried the latest version. I downloaded the latest zip file from here which contains 2 different zip file inside it. One is untouched "not modified" and the other is nulled version. Nulled version doesn't need any key or any license thing, it just works pretty fine including the demos internally without uploading any xml file. Just go to theme options > import demo > select demo style and click import.