I Had the exact same issue. After reading the replies here I did some looking around. For me the issue was that one of the T3s had an amount in box 24 (foreign business income ) and it ended up as a field on one of the self employed forms. Not even sure how I found it. Since it was a small amount - $6. for me and $13 for my husband, I just removed them, (let the CRA come after me for not reporting $20 of income 🙂 ) Then the error was gone and I was able to file. In retrospect maybe I should have reported them as box 25 - foreign investment income. Any this small amount wasted a lot of time and energy. but the taxes are files
