Two of them were for 1041s that I had already completed the returns but was waiting for 8879s.  I just filed the actual returns - CAGMC.  One was for a kid's 1040 that was already done and waiting for the 8879.  I just skipped filing the extension since there was a refund coming.

But I did have the issue filing a sub S return back in March that had been extended.  I screwed around with it for quite awhile.  If I remember right, I think I went to the EF homebase and updated acknowledgements on the return to get it to fly ---------- but I tried so many things, I'm not positive that was the trick that did it for me.