Hi,
I received the same error several times. To fix the issue. Close the application and reopen it. Before selecting your return, click on Online and check for updates. The system updated and I was able to efile. To be clear, the system automatically performs an update before allowing the app to open, so I'm not sure why it needed to do another update. But it worked. Hope this helps.
P.S. the reason I'm sharing is because turbo tax has the audacity to charge me to provide tech support.
