I'm having the same issue. I'm on windows and I also double checked that the forms were available. I called customer support twice and the first agent said it's because the irs wasn't open until the 29th for efiles basically. Which I was like okay I'll wait. I called today on the 29th because the problem is still there. There aren't any needed updates. There is nothing wrong with my return outside of the Schedule C form having problems and still no answers.
