Project quits by clicking on slide, see message

My Captivate 2019 project quits, when I click on the slide with the message: Thank you for exiting the content. You may now navigate away from this content. 

If I click on the click boxes, it works, e.g. it goes to the next slide. I do not want, that the project quits, when the user clicks on the slide, but on the click boxes. The basis of the slides was an import from Powerpoint and in some areas on the slides, i used click boxes. Any help?