I was having difficulty with the Tuition Transfer line. The Ufile software clearly stated the Maximum amount my child could transfer to a parent, ($6922) but when you enter that EXACT amount in the window you get a warning that it exceeds the Maximum for Ontario Tuition transferable. It would then prevent you from filing said child's taxes online.
I did notice that when I installed the software it never checked for an update. I selected Settings and Update. There was an update available to me so I downloaded and installed it.
That fixed the bug with the software and now my child was able to transfer the Maximum Provincial Tuition amount to a parent.
The built in check that looks for problem entries in the window was a value from 2015 ($6820) and not 2016 ($6922). Once you update the software the problem fixes itself.