I have placed a Flash file within a PowerPoint 2003 presentation, and it
runs and looks good on my computer. However, as it is a presentation that I
am developing, the file needs to go to another person. This other person is
having an error when trying to run the same PPT presentation on their own pc
. This person tried it on other machines as well, with mixed results. The
error message in PPT is this:

"Some controls on this presentation can't be activated. They might not be
registered on this computer."

I see that there are a few threads that have been going around, but w/o
specific answers.  Currently, I have Flash Player 9 installed through IE.  I
am running Windows XP SP1 (company standard), PowerPoint 2003 SP2 (company
standard), and am unsure how to check for the latest ActiveX version.  (that
is also a company standard though).

The Flash movie that I have imported into a PowerPoint slide was exported
using FP ver. 6, (standard w/ 3rd party software).  The strange thing is that
my coworker's machine was running FP 8, and the error message popped up when
my presentation was opened on her machine.  Then, we upgraded her IE to FP 9,
and the error message went away.  

Any thoughts on getting the presentation to work on multiple computers?  Do
I need to make sure all PPT, FP, ActiveX, and Windows XP (and SP) are all the
same across the board?  That's troublesome when multiple users are involved.  
Thanks for the assistance and bearing through my long question.