Perspective Warp tool does not work.
I am trying to adjust the horizontal plane in the middle of a photograph so that it is truly horizontal. I want the sky line to stay the way it is. I want to adjust the shore-line in the middle of the photo so that it is truly horizontal. So, I am using the Perspective Warp tool. However, once I insert the Perspective Warp lines and hit the Enter button, nothing changes. The Warp lines disappear, and the photo does not change at all. How do I get the Warp lines to make the changes? I can't get the Perspective Warp tool to actually make any changes to the image.


