I'm trying to render and all I get is the same cached image, whether I choose Cycles or Blender Render. I can hide and move objects, but the cached image is all I get when I press the render button. If I remove the images in the output folder, I just get a blank render screen and no rendering happens at all. What do you think is going on here?
Cegaton's link held the answer:
The Compositor and Sequence settings are enabled by default, so if there is any data in the compositor or the sequencer blender will render from that instead of the scene.
Disable Sequence in Render Settings > Post processing or remove the sequencer strips and it will render the scene instead.