I receive the same software error message, and it's likely due to the EXTREMELY LATE version of the software. I do NOT want to file an extensive tax return by MAIL, when TURBOTAX screwed-up the interface between Schedule M-1 and the K-1. There is virtually NO software support for Turbotax Business, so I'm going to try a different software package next year and maybe they won't wait until the last minute to issue a valid version of tax software that allows customers to file electronically.
