Are you trying to print a return for the 2017 tax year? You can't print your return because the forms have not yet been certified by the CRA for filing for the 2017 tax year.
You'll be able to update your installation of TurboTax, print (and file) your 2017 tax return in roughly a couple of weeks.
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.