To update existing WOWSlider galleries in Wordpress: 1) Create a slideshow in WOW Slider program. Add slider title. Save your slider as project file (.wowsl). 2) Add the created module -- wowslider.zip - using WOW Slider menu: WOW Slider - Add New 3) Add the shortcode inside the page or post where you want your slider to appear. 4) Change "id" on "title" and your slider's title. For example: [wowslider id="2"] will be [wowslider title="main-demo"]. 5) Open saved project file (.wowsl) and make changes you need (add/delete images, change transition effect, delays, edit descriptions, etc.). Make sure that the title of your slider wasn't changed. 6) Publish the modified slider as Wordpress module -- wowslider.zip. 7) Add this module in Wordpress in the usual way. Changes will be applied automatically, editing of shortcode isn't required.