We are having the same issue and are stuck and cannot file.
On this availability page, I cannot find the "TP" version of Schedule D, maybe that has something to do with it.
https://care-cdn.prodsupportsite.a.intuit.com/forms-availability/turbotax_pa_online_individual.html
I do see these 2 other ones...
- Schedule D (PA-40 D) (SP), Sale, Exchange, or Disposition of Property (SP)
- Schedule D (PA-40 D), Sale, Exchange, or Disposition of Property
