why am i getting an error message for cost basis of a mileage method business vehicle

[Clive2]

have a business vehicle using the mileage method.  receiving an error message where the tax package wants me to enter the cost basis of the vehicle

[George4Tacks]

Make the poor, sad program happy and enter the the basis! We have to learn to live with each other and put up with the foibles of our new friends. 

[Greta]

I had that issue as well. I went to line 23 and checked the box that said "standard mileage" and that got rid of the pink request for cost basis