I called TT for the 5TH time last night re: the issue of not being able to e-file my return (1040+Sch C). I use the Windows Desktop version - Home & Business. The support person (finally) was able to acknowledge and identify that there WAS a problem/glitch in the program and that an open investigation had now been created. She was NOT able to say when it would be fixed...but that it would. Be sure to add your name to the link in the message above mine to be notified when the issue is fixed. I've always e-filed my return...same forms each year...and have never had this problem :o/