I just resolved the issue by deactivating and then reactivating my BNH account within Quicken. Reset did not do it.
I had received the error for several days and talked to customer service who gave me the usual push back. I did send them a screenshot and connection log which ended with:
"Parse error. Current object: LEDGERBAL Missing Tag: TAG UNKNOWN"
While waiting for a response from BNH, I did try the deactivate/reactivate which appeared to resolve the issue.