If you want to reset your hud settings to default, follow these steps.
1) Close HM and the Table Manager. Please update to the latest beta -
http://www.holdemmanager.com/downloads/HmBetaUpdate.exe
2) Export any custom HUD configs and Copy/Paste your \Config folder before deleting any files as a backup.
3) Delete your existing HUD Prefs files, so HM will rebuild them to default. If you have any custom HUD's export them first and/or copy the \config folder to back them up.
4) Delete > \Holdem Manager\Config\prefs.xml. If you want to reset your HUD panel positions also, delete: pospref.txt, and pospref2.txt, and pospref4.txt.
5) Start HM< Auto Import, Open the Table Manager, and test on a single cash table.
This is usually because the Use For tab is improperly configured for one or more of your HUD layouts and/or you are not selecting the proper HUD from the Choose Configuration: drop-down menu. The Default HUD should be set to a site you never play, and make sure none of the other layouts have conflicting rules. Any time HM isn't sure which HUD to use, it will revert to the Default HUD (even if it is set to a site you never play).
FAQ - Hold'em Manager Poker Tracking Software :: Use For - Tab 3
How To Setup And Use Multiple HUD Configs/Layouts - Holdem Manager Forums