Ok, this is probably a stupid mistake on my part, but I keep getting 
this error
when I make my package:

"error: image_geometry/pinhole_camera_model.h: No such file or directory"

Here's the include:
#include <image_geometry/pinhole_camera_model.h>

And here's the line in manifest.xml:
<depend package="image_geometry"/>

I'm using cturtle, I ran "make clean" and then "rosmake".  The image_geometry
package exists (I roscd'd to it and found pinhole_camera_model.h in the 
include
directory).

Thanks,
Jared