I had this same problem with TT Premier on a Mac. I tried again yesterday and got fixed, but I had to do something different.
Previously, when I got to the point where TurboTax asked if I had all my ESPP information or if it wanted me to go "step by step," I said I had all the information. I entered everything including the adjusted cost basis, TT would report back the correct basis and gain, but it would not put that on the forms.
Yesterday, I had an idea and when I got to that decision point I selected the option to have TT take me step by step and it worked.
I figured I would post that as it was very frustrating to me for a long time.
