On Illinois Schedule M (Other Additions and Subtractions), line 22 (US Treasury, etc interest) is incorrectly calculated. It is subtracting the line 14 amount from the US Gov't interest from non- K-1-T's. It is hard to believe that the delta is a coincidence. For example:
US Gov't Interest from mutual funds, etc = $500
US Gov't Interest on K-1-T's = $100
Instead of showing $100 on line 14 and $500 on line 22...
it shows $100 on line 14 and $400 on line 22.