Regarding my business category, I entered the number from the IRS listing on the WEB but the program rejected it. I finally just ignored the error flag. In previous years I had no problems. Perhaps there is an error in the program.
The software took me through the needed steps to complete my return in about an hour. My return included simple W-2 wages and investment activity. But it was pretty painless and straight forward.
The address provided to mail state return for North Carolina was not accepted by the Post Office. They say the there is no such Zip Code for Raleigh NC and would not allow me to send Certified letter.