If slider disappeared after update to slider 5.x version + WordPress 4.3 you must do one simple thing. Under "Slider settings" you have "Select a slider type" section and you must click on Slideshow-Auto option. You can see this option on http://pasteboard.co/2PyViTNi.png
Also if you have 1 slide only, you must click on Hero Scene option as well under the same section what you can see on http://pasteboard.co/2Pz5XCq9.png
Those things were changed due to the recent version version of WordPress 4.3 and Revolution Slider 5.x
EDITED!!! Plugin's author (ThemePunch) fixed this issue with recent version (18.104.22.168). So the plugin will be updated with next theme update (this Friday).