Charlton staff have been paid this morning. This normally would not be worth comment and is the minimum you would expect. There have been some reports that the club has fallen behind on tax and national insurance, but I have no confirmation of them.
As for where the money came from, my best guess would be the EFL payment. As far as I am aware, there has been no injection of cash and I do not expect one any time soon.
One concern is that the central payment money had been intended to settle other creditors who still want to be paid.