Lightroom tools won't work in the center of the image. The tool icon changes to the cursor as I move in from the side of the image. It's not a consistent area either. It happened after I erroneously hit a few keys and had the display change to images with all black background.
I was in Lights Out Mode at one time but when back in the regular mode I encountered this problem. I've had some minor computer issues and have a new one to transfer to once IT hooks it to the network. I'm hoping that will prove to be the issue.