It is May 10th 2020, and I'm having  a similar problem with 2018 tax year return.  When I attempt to e-file I get an error message that says the "version I'm using is no longer valid, need to update".  I have updated several times, and get the message that there are no new updates needed.  Still getting the message.  ONLY with Federal, my state filed correctly.  I filed a bunch of 2019 returns on the 9th and all was well.