In entering my data for my company in the Schedule C area, you will find a page entitled "Enter Your Business Expenses." There you will find a pretty long list of various business expenses where you can list your data, one by one. The top of the list begins with Advertising, Commissions, Communications, etc.
At the very bottom of the list is "Energy Efficient Commercial Buildings" which was pre-populated with a zero.
Remove (delete) that zero, leaving the box blank.
That solved the problem for me.
