I am prompted to "Check This Entry. Schedule D: Sales Price is estimated. Sales Price: 0." It prompts me to put in sales price and when I do, it does not accept it.

My state (CA) taxes has some error that loops. I am prompted to "Check This Entry. Schedule D: Sales Price is estimated. Sales Price: 0." It prompts me to put in sales price and when I do, it does not accept it... How to fix?