Hey Don147, I had the same issue as you with my T3's showing only 1 box for box 21, 52 and 53. Turbotax has 2 boxes for 21, 52 and 53. I put my T3 values in the first box of each and got the same errors as you preventing me from filing. After talking to a turbotax agent on the phone today for half an hour she finally instructed me to make sure that my entries were in the total capital gains boxes for 21, 52 and 53. She said total capital gains included foreign capital gains anyway. After putting box 21 in the 1st box 21 (total cap gains) and box 52 and 53 in the second boxes (Total Capital gains) the errors were removed and I was able to net file. Also now the capital gains show up in schedule 3 now while they didn't before. The Turbotax agent told me this is what she has been instructing people to do and it works and wishes Turbotax would fix the problem or at least sent out a post of what to do. Good luck I'm sure this will correct your errors.
