I can't transform/rotate an image
I'm using CS design 5.5 Photoshop. I'm trying to use edit/transform/rotate to straighten an image. I have a vertical ruler next to a vertical line I want to rotate a few degrees but my cursor arrow never changes to a double arrow to allow me to rotate the image. I'm working on a layer duplicate of the background. I'm sure it's something simple I haven't done. Any suggestions?
Thanks in advance.
JohnB
