Hi Mohamed, thanks for your reaction,
I’m sorry that I didn’t mention this before, but I can’t seem to activate the Revolution Slider. When I click ‘activate’, the page becomes empty (except for the Dashboard menu bar on the left and top).
(other plugins installed and activated fine)
I installed this theme on a different server two weeks ago, but that provider had a very problematic service, so I moved the domain name to a better hosting company. Can it be that the theme/slider is somehow linked to the old IP address and therefore the slider won’t install now, because it thinks it’s installed twice?