federal political contribution denied on assessment using your software due to caclulation error?

[questionsforever]

I had a federal political contribution and i entered it using your software in the slips panel.

i got an assessment today saying "We found a calculation error in your federal political contribution tax credit, so we changed your credit to $0.00."

how can there be an error when I used your software!?

Strangely, on the NOA it does show the amount I had put in there as a contribution.