isdsoft When opening a project with the latest stable 3.6.52 registered (Essential) version of Spine the images are not being loaded/displayed. The image visibility is set to visible. The same project opens up just fine with the latest Beta Trial version of spine. I'm running a freshly installed version of windows 8.1 and spine with default settings.
Nate Does your project contain meshes? Spine Essential doesn't support meshes, so they aren't displayed there. The Spine trial has all the features of Spine Professional, so you'll see meshes displayed there.