Blender - Rendering - Object not visible in render
Try following :
In object mode press W --- clear all restricted render. That will make all objects visible in the render.
Also, you can select an object and hit Ctrl+Alt+H to un-restrict render on the selected object.
If there are objects that you have that you do not want to be rendered then you can click the camera button next to the objects name in the outliner which is usually the top right window. This toggles camera visibility.
Also, check duplication setting of the object. Duplication setting for this object should be set to "None" and this worked for me.