Usually when you install a new Theme in Prestashop there are some Modules installed to.
Normally after uploading the Theme you'll see a List of it added, activated and deactivated.
Recently i installed a Theme which uses the Revolution Slider. Unfortunaely after the Activation the Settings were a little messed up, and Chrome Log showed some Errors.
- deacivate all Sliders
- deactivate Revolution Slider
- reactivate Revolution Slider
Now everything should work as expected.
If not feel free to drop me a line on firstname.lastname@example.org - i can take a look and maybe help you out ;)