The HUD overlay itself is working and recording new hand data, but the database has dropped a large section of hands, including any new hands, and is stuck at some 500 hands recorded (should be about 4k).
But HM3 is still getting data, because the HUD on the poker table is working fine and updates as new data comes in.
Other information:
There used to be a problem where the popups from clicking on the player's HUD would appear partially off screen. This problem stopped with the database problem I'm having started. I don't know for sure if there is a relation or not.