can not install HOT start

I followed the instructions on demo.hotjoomlatemplates.com/ecommerce/in...icle&id=23&Itemid=63

uploaded the unzipped files on my hosting space (once in the template directory once in a /tmp directory
I changed all files (chmod 777).
But when trying to open in a browser my:
www.my-web-site.com/templates/hot_ecommerce_hotstart/index.php
I get 500 internal server error.

Wasting too much time ...
HELP

You totally missed folders and uploaded in wrong places. Please delete everything, unpack on local computer and upload everything in the root folder ( www.my-web-site.com ) of your hosting space.

If you are wasting too much time we can install this for you for $30 if you order installation service.

done it, and got the same error

Please give me real link of you site where you uploaded files.

it they directories in the zip file have been unpacked in the root directory of www.smartcruisetours.com

You did not upload there. When I click this link I see default Joomla installed there.