Revolution Slider

I started building a site using Aegeus and Rev Slder worked fine..slides built and displayed as intended. Then installed Highend theme and Rev Slider ow not being found.
now getting this message where slider should display :

“Revolution Slider Error: Slider with alias Homepage not found.
Maybe you mean: ‘Homepage Slider'”

I have deactivated all plugins, ininstalled and reinstalled the Rev Slider plugin but no change. Any ideas please?