I have the same issue. I am a MAC user and I hate turbotax online. This year I borrowed a Windows PC to install Turbotax desktop and have now returned it. I need to open a couple of tt24 files where I ran different tax scenarios and I have no way to do this. Can I open a tt24 file using the online version? If this issue isn't addressed for MAC users I will be looking someone else in the future. I'm not willing to buy a windows PC for the sole purpose of doing taxes once per year.
