The solution you posted does not appear to be a solution at all.

In Mass we have the one extra day to file both Federal & State returns due to the Patriots Day Holiday.

Trying to file a FEDERAL extension is not working.  

In past years the solution was to remove error checking. (That was working at 2am this morning but no longer)

This is not working now and the Federal extensions are not transmitting.

I have numerous extensions to file including many with payments.

please find a solution