If you are not using that T776 form, you will need to remove any information which is on it.
While in the Forms View of TurboTax which you have installed in your computer, navigate to that T776 form which is causing the problem. Do so by going to the Forms Lookup, type in T776, and choose the one which has an asterisk (*) next to it. Then click on Edit (at the top above the toolbar), Forms and "Clear Current Form". This should remove everything that is on that T776.
