I’m trying to solve problem i9-80 in Prentice Hall’s Federal Taxation 2014 edition, George and Marge Large’s taxes.

I’m trying to solve problem i9-80 in Prentice Hall’s Federal Taxation 2014 edition, George and Marge Large’s taxes. Instructions say I’m supposed to fill out the Schedule SE, but I came up with $0 profit on the 8829. Should I assume I did something wrong somewhere and I should be showing a profit? If so, where?