Bear with me if this is an easy fix-- I'm a bit new to JME.
While I was trying to plug in new images into my skybox, I came up with a problem. Though the textures are the same size (512x512), the same dpi, the same file type, and in the same folder as the system images that do load, I get a Missing Texture graphic on my SkyBox instead.
// This code does not work:
Texture north = TextureManager.loadTexture(Game.class.getClassLoader()
// However, this code does:
Texture south = TextureManager.loadTexture(Game.class.getClassLoader()
Since these two files are literally side-by-side, and since I copied/pasted the file name directly into the code, there is no problem with the file path or name. The image itself is perfectly valid-- on further testing I found this happens to all non-default JME images.
Is this just a JME quirk? Is it really looking at some other File-System-In-Space (twilight zone music)? A error in my eclipse setup?
I had some similar problems with home made .3ds files not importing until I implemented a series of hack-y try/catch base converters thanks to some nice person who had had the same problem on the forums last year. Possibly related?