I recently installed the simpleviewer plugin.
It seems to work OK, but my big problem with it, is when I go to "add simpleviewer gallery" it gives me the option to use my wordpress media library or flickr. For some reason when I use my media library (with many images in it), it won't actually load any images in the site. When I use Flickr, it does, but it loads all of the images indiscriminately.
Isn't there an easy way with this to add a gallery and pick the photos you want, rather than either getting them all?
At one point my brother had it working with a new batch of photos that he installed, but none of my existing photos in the media library. I can't figure it out. It's all very counter-intuitive.