I noticed this error is more common then I thought. I had a client who had the same issue we were able to work through it by starting in the federal section, under; "credits and deductions" in her particular case she did not have the correct address, when it asked if her mailing address was the same under the section for housing credits. She accidentally put in the previous address which wouldn't allow that 511 form to populate. An additional error she was receiving was due to the prior year income not automatically carrying over so she had to manually input that prior year AGI in form 511 on line 3 as well as below that where it asked for AGI again. One filled in automatically but the other did not.
Hopefully anyone who has this problem can go back into there federal return under "credits and deductions", to double check the answers to those questions, to get that OK-511 form to populate.
