BobS The "Save Configuration" button on Printer Settings {printer Name} has been replaced with a "FIX errors to update" box. It gives the "NO" symbol when you mouse over it, but you can still press it and get a "configuration Saved" response.
Repetier Don't save in that case. Will check to prevent it. It means values are wrong and saving with invalid values you might get issues later if backend check does not see it.