No.  There is nothing "unusual" in any either file. 

I did find another post on this board (through Google Search not through this board's search) that after many hours with ProSeries support they believe it is a duplicate tax return filing and that Intuit (not ProSeries) is rejecting the e-file before transmission.  It could be someone else used TurboTax, Lacerte, etc.  I'm now baffled that two clients out of a zillion and all in the last two days.