Efile Keeps getting Rejected

I use the desktop version of TT.  My e-file has been rejected like 10 times and I don't know what's the problem.  It started with not having a IRS issued IP Pin number.  I thought it was the 5 digit number when you're filing but through the forum, I learned that it's a 6 digit number issued by the IRS.  Both my wife and I got the pin number and we entered it in Personal/Other Tax Situations/Identify Protection Pin.  It still got rejected.  I double checked the prior AGI and it was correct.  I've been e-filing for as long as I can remember but I'm at wit's end with this years filing.  Any assistance would be greatly appreciated. Thanks!