Skrooge strange previous important broken error message

I have had this for years, but I never took the time to post about it. In my Skrooge document, all sorts of actions result in an error message like

The previous import in [account] has been broken by this action or a previous one.

Nothing is wrong, no problem is happening with anything I can tell, though this error keeps showing up (and I keep dismissing it).

Any idea how to resolve this?