Why didn't Proseries issue an alert about this?  I just had a client receive a letter from the IRS asking for another $1,200 in tax due and when I opened up her tax return that we filed in early March, the tax calculated was completely different.  No notices or nothing.  Does anybody have a recommendation on a tax software company that is better about this?  I am really tired of these errors without warnings.  Something similar happened last year on Schedule D tax calculation.