I also had issues with this Box 16 and others. I did what you said, deleted the K-1 and re-entered it again. Had the same issues with return again, but this time it was asking for information for a Schedule E. I switched to forms mode, looked at the Sched. E, there was nothing on it, deleted the form and that seemed to clear up my problem and I was able to E-file with no errors. Very frustrating and I'm not entirely confident the return is correct.
