Indexhibit Support

Just installed Indexhibit, trying to manage the sections, but i every time I click on "Admin" and etc. it brings this error:

Fatal error: Call to undefined function getThemes() in /home2/alina/public_html/ndxzstudio/module/system/index.php on line 578

What's the problem?

my site: alinamanukyan.com

Reupload your ndxzstudio folder - the error message is telling us that somewhere in the change a file is missing.