Unable to efile Nebraska tax submission

Filed Federal tax and it has been accepted by IRS.  Upon filing I elected to wait on filing state until a later time. Now I'm ready to file Nebraska. When I try to E-File Nebraska, TT tells me I have to file Federal first and offers me a back button. But the back button does not take me to a place where I can choose Federal and State. The tax file has the info that my Federal was accepted. How can I get TT to E-File NE?