After much more research, I am wondering if Error 54 has to do with fed form 8453-FE. On the TurboTax form availability site, it mentions form (8453-FE(E) ) is unsupported for E-Filing. While the form I have is just 8453-FE without the additional (E), and worked no problem last year, perhaps the underlying programming code is incorrect or filing rules changed.
https://care-cdn.prodsupportsite.a.intuit.com/forms-availability/turbotaxbusiness_fed_windows_fiduci...
@catina can you clarify?
