Hi, I have had the same issue. I found I can force print the K-1s by doing the following:
While in the program, go to View, then Forms, find the K-1 you need and click on it from the list of forms that appear on the left of the screen. Hit the Print button that appears, then Preview Print Copy. Once it appears in the .pdf format, use whatever printer function you need. You will need to do this for each Federal and State K-1 that is needed and will need to attach them to the return and mail the return. I am a long time user, not a TurboTax customer service person, so this is my workaround.
Hope it works for you.
