I encountered same error with T1198 form online. I quadruple checked my addition and amounts on the forms and tried re-entering zeros in unused boxes. I wasted another 25 minutes (add that to last week's time wasted) trying to troubleshoot errors in Turbotax software and I have already submitted payment. I am very frustrated with the errors and delays this year. I have used Turbotax for over a decade and used to recommend to colleagues and family. I will likely look for an alternative next year. 

I am getting the same error message. 

The desktop version allows me to enter T1198 in forms method but it will not let me put the year as 2024, only 2023 or before.  

@senna_fan We are aware of the issue. Our development team is working on resolving this issue. We appreciate your patience.

Same. Have used it for years. I am also trying to do the T1198 form and my numbers "don't add up" in the boxes - but they do on paper. So frustrated. 

But the form has a major glitch.  The error is that the numbers "don't add up" - but in reality they do. MANY people with lump-sum payments did NOT receive any interest.  Can't get past the Turbo Tax math not mathing in the boxes. 

GLITCH. THEY DO ADD UP. 

I am trying to enter the information and I am still getting an error due there is no interest payment.   When will this be rectified?  If not may I get a refund on my purchase and use another program.