Demo Manager

I purchased a script through Code Canyon for the purpose of resetting a shopping cart system that I want to run as a demo. The script is suppose to reset the demo to its original state, However, it doesn't function properly. It will, drop all the tables in the database, it will restore the shopping cart's files from a backup zip file but it will not rebuild the database from a .sql file. I have been in contact with my web-host and they tried to make it work as well but came up with there is an issue in the script. I am interested in the following: 1 - A price on fixing the script. 2 - A price for making me a script that I can use to manage the demo installations with. I cannot get support from the programmer that sells the script on Code Canyon, I am attaching the script that I purchased for review.