Hi Mohammad,
I am using FileZilla as the ftp client. To update to the latest version of revolution slider, is the best way to delete the entire revslider folder and replace with the new updated one? Or just replace the new folder over the old one? If I completely delete the revslider folder, will this delete all of my slides, etc?
Also, just an fyi, a friend of mine has the same theme and the latest revolution slider version. He tried adding a layer with an end time but has the exact same problem, so I am guessing this may not resolve the issue. But I will update and let you know.