As I started to add materials (glossy) to my objects, at one point in that process I realized I couldn't see one of my objects.
It was still "there" because all that remained was a grey dot (which turned orange when the shape was selected) presumably at its center of mass. I assume this is the 3D manipulator?
When i clicked it, it let me move this invisible object and scale it etc, but I couldn't see it in object mode, edit mode, rendered, wireframe, sculpting. You get the idea...
I need this fixed to continue with my model. Also, I'm new to blender.
Pics: (I named the invisible object invisible)