Kirupa Tutorial problem - "Centered Popup"

I’m using Flash MX 2004 to open sized window when user clicks a button.

Kirupa Tutorial “Launching a centered popup window” was used and functions correctly with addition of “_global.” to the “openWinCentre” command in the actions frame.
It functions correctly UNLESS the user does not close popup then trys to open another popup via a different button - THEN the problem occours… instead of new popup, the old popup reappears!

Any thoughts? Thanks in advance.

Kirupa tutorial used: www.kirupa.com/developer/mx/centered_popup.htm