Preventing Powerpoint popups during Applescript

Is there a way to prevent all the visual flashing from popups during the "activating" of Powerpoint through an applescript? I have the following code which works, but there are a lot of popups which occur before and after the slide show plays, any suggestions?

To start the powerpoint slide show;

Code:

tell application "Microsoft Powerpoint"
activate
open "/users/documents/show1.pptx"
run slide show the slide show settings of the front presentation
end tell

To stop the powerpoint slide show;

Code:

tell application "Microsoft Powerpoint"
exit slide show slide show view of slide show window of the front presentation
tell front presentation
save in "/users/documents/show1.pptx"
close
end tell
end tell

I tried various patterns of the "Finder" to make the process "visible" false, but that did not work. The main powerpoint screen is always open. I even tried to use "launch" instead of "activate", same thing, my slide stalled and started playing half way into the presentation. Any ideas?