What-if Worksheet" re: child tax credit & earned income credit error - IF you are not claiming the EIC, I have found a workaround

This only works on the desktop version as far as I can tell. IF you are not claiming the earned income credit in any way, shape or form, to fix this and file you must:

switch to forms view (up at the top, in the blue bar)

Navigate to the "EIC Worksheet" form

About a third of the way down, you should find a section titled "Election to Use 2016 Earned Income for Eligible Hurricane Victims Smart Worksheet"

Line A - Elect to use ... - check "no"

Line B - Taxpayer is eligible - check "no"

Line C - Earned Income for EIC from your 2016 return - set to zero

Return to Step by Step view, and continue through the process. It should allow you to e-file when you get to the end. It just worked for me.