Retirement tax questions

I just discovered the same error.  For some reason this year, Turbo Tax seems to be deducting another $20,000 from the New York State Employee pension amount, none of which should be taxed.  The $20,000 reduction applies to other pensions or withdrawals from Section 457 Deferred Compensation, at least I think so.  I've used Turbo Tax for years, and this is the first time I've encountered this error.  Anyone know how to fix this?