Perspective crop tool problem?

[bobs10801556]

Perspective crop tool. In Photoshop CC. Applying desired adjustments causes the image to "disappear" That is it becomes a 1x1 pixel image. Have I got a setting wrong? Any suggestions?

[JJMack]

[bobs10801556]

Thanks for the answer. In your diagram I get to stage 3 in the 3rd image then press enter to apply the changes and I end up with an image 1 pixel by 1 pixel in size. I should add I have used the tool successfully probably 20 times in the last 2 weeks.

[JJMack · Accepted solution]

If Photoshop is not working correctly have you tried resetting all tools and your Photoshop user ID's preferences?

[Jacqueline25014555sy3y]

How do I re set  I went into Preferences and tools but couldnt see reset