I have not marked any OAS income as there was none, but Turbo tax won't let me netfile, why?

What is the exact error message that you are getting?

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1. Using turbo tax download
2. it says person over 65, no OAS, fix it
3. there is nothin marked for OAS as none received.
4. turbo tax message .. cannot use net file, must print and mail
5. why?…

Are you getting an error or a warning? Please verify if there has been an error in the choosing of the         T-slips list in the return using Easy-Steps, by following the steps in the image below. If need be remove the check mark and click Continue at the bottom of the screen to save your change.

Thank you for choosing TurboTax.

Went to nefile and it says due to error (no oas) cannot netfile. 
somerror message that incannot fix as the individual received nonOAS

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