$10,390 doesn't sound like the amount of a standard deduction for any year that the tax return would have had a line 12b for charitable contributions. Are you married filing separately and your spouse itemizes? If so, your tax return should have included Schedule A and nothing on Form 1040 line 12b. It seems likely that TurboTax would have prevented e-filing a tax return with itemized deductions on line 12a and an entry on line 12b. Did you file on paper?
