Sorry I didn't try to propose an answer to the TurboTax problem because I don't know your 1099-R.
I meant to say that the distribution is not taxable, so your return Line 20a should be zero.
If it is not zero, it is showing taxable, don't file until you figure how to correct that,
OR
override it and mail in your state tax return.
Line 20b will show the amount and Line 20a is zero.
