If TurboTax is not letting you continue, you can try the following:
Go out of your program and go back in.
Clear your cache and cookies.
Try a different Web Browser.
If you are using TurboTax Desktop make sure all updates have been run on your program. You can do this by clicking on "Online" in the black bar across the top of your TurboTax screen. And then select "Check for Updates".
Try going back to enter your Driver's License. Navigate to the "File" tab on the left menu, and follow the steps before submitting your return.
If you have any additional questions or information regarding this please return to TurboTax Community and we would be glad to help.