Fatal error: Class 'stallion_gtranslator' not found

When I intalled stallion theme in my wp site is shows the error without quote

“Fatal error: Class ‘stallion_gtranslator’ not found in /home/wellwaterhydration/wellwaterhydration.com/wp-includes/widgets.php on line 324”

I search google and try to did the following but no result:
1. First backup my site.
2. delete all files and folder from the root directory.
3. Fresh install wp from dream host one click installation.
4. Again upload fresh copy of stallion.
5. Activate stallion theme and again the same error comes up.

The site is work fine with other theme except stallion. Please help me with this issue