HI.  I just wanted to add my rant as well.  I gave up e-filing yesterday with 25 more tax returns to transmit before midnight.  I kept getting that message from about mid-afternoon until 9 pm when I gave up.  I reached out to some of my accountant friends and they did not have the problem, but I still thought for sure it was a CRA problem.  I am shocked this morning to learn it is an INTUIT problem.  As so many users have already responded... this is UNACCEPTABLE.  We pay a lot to use this software package and CANNOT have this happening on the last day of the tax season.  I will be demanding a return of my money and will certainly look at alternative applications to use next year.