Let me ask you this, if I may please. Assuming you did have SE income reported on your 2015 tax return, did you report the sale or disposition of your self-employment business on the 2015 return? If you did not, then the IRS is expecting a SCH C from you for 2016 - even if you had no SE income/expenses in 2016.
If you did not report the sale or other disposition of your SCH C business in 2015, then you'll need to either amend your 2015 return, or if you like I can help you to report it's disposition on your 2016 return. But you'll need TT Self-Employed for that, of course.
