Intuit's tax software has at least one similar gotcha: no number
used -- including in temporary calculations -- can exceed 2^31-1 cents.
Calculations just aren't right, if that happens.
Now if your income is anywhere near 2^31-1 cents, you can afford the
business version. But there are other ways to get there without being
someone's rich uncle.
Anyway, the short term solution was: (1) return said tax program
to Costco, and (2) sign up for a free trial version of their
professional tax software -- full version preloaded with $100
which, roughly, is fees for about five tax returns. (And (3) get
a tax accountant who knows what he's doing.)
There might be a similar trial program for you to use.