Today I downloaded the 03/11/22 update from TurboTax. It contained the Form 1116 Schedule B. Without further intervention, it was properly filled out, and the error messages disappeared. In order to file electronically, I printed that form to a properly labeled pdf file in a new directory c://attachment/ on my computer. Then, it was apparently recognized and attached to my electronic filing, and it appears to have been accepted. We'll see.
