Are you running PTO, PAHud and Stars all as Administrator? You still need to do this even if UAC is disabled.
ATTENTION: Windows VISTA and 7 users, you must read this...Make sure that popups are enabled in Options > Preferences (although if you see it sometimes then it sounds like they already are).
The point you need to click may not be in the same position relative to the seats as it used to be if the table layouts have changed - this will be especially true if you use a skin for your tables. The point you need to click is an absolute point on the window, but once you find that it should work OK.
FWIW, in PT3 (with built-in HUD) you can fully configure as many popup groups as you like and link them to specific on-table stat groups (when you click a group the popup is activated).
Tutorial: Managing HUD GroupsThere is a 60 day free trial, and you get a discount as a PT2/PAHud owner.
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