@LenaH
I called Turbo Tax Support this afternoon. After 1:15, it was concluded that Form 8881 was not being uploaded to my eFile and hence, the rejection. Both forms 3800 and 8881 are supposed to be able to be uploaded but unknown why it's not being in this situation.
Will have to snail mail forms in. Disappointed that Turbo Tax couldn't get this figured out.
