Hi Scott/John:
I have questions, not answers I'm afraid.
Where does the error message occur in Ledger? Is it consistent and duplicated easily? If the error occurs consistently in live data, does it happen in Sample data too? Are there other users - if so, are they experiencing the same problems?
Did the error first appear today? If the problem started today, what has changed since yesterday? Were any Adagio updates installed recently? If not, the problem is in the environment. Is the user working from home? I'm seeing remote access problems causing this sort of error during the pandemic. If they are working from home, what technology are they using to run Adagio? Are there any server problems today?