State tax filing

I just got off the phone with a TurboTax representative and he confirmed that if there is the same amount of the federal and state tax withheld, this would trigger not being able to e-file your Indiana state taxes.  He didn't know why it would do this either so I guess I'll just have to file by mail.  I have 10% federal tax withheld and 10% state tax withheld.  What is wrong with doing this????  So frustrating that this would trigger a no e-file response.