Hi, first of all, I love Photoswipe! infact, I like it so much I want to use it on my desktop platform, so I clicked on "always replace viewer". The problem, is that when this is clicked on, I cannot edit in Nextgen - I get blank screens when I go into Options and add photos. It took alot of time and frustration to figure out that this was what was causing me trouble (It also prevented me from being able to drag and drop in my thesis menus and widgets). I now turn off the viewer in photoswipe when I am editing and this has solved the problem for me. Thought you would like to know about this bug. Also hope you continue to develope it for desktop as well - its fast and nice simple interface. thank you.