I'm having the same issues as others. My K-3 only has US sourced income and TurboTax does not allow me to enter US. It seems a simple fix, just add US to the pull-down list, otherwise I cannot enter my K-3 and am stuck.
I spent 2 hours on a tech support call who finally suggested I lie about box 16 on my K-1 to avoid entering my K-3 altogether, but that seems poor and possibly illegal advice...to lie on a government form?
Please, just add US to the list of possible entries on the Interview form...
