Thanks to those of you who posted about the new message in TurboTax and the IRS known issue. I also got the same message (unable to e-file due to using simplified AMT) in the online version of TurboTax this morning and have proceeded to mail in my returns. I agree with a previous poster that it is odd they can't just provide the data for the newly required fields, but it seems that TurboTax is essentially declaring they are not going to fix it this year so I didn't see a reason to wait any longer before mailing.
