I don't think the .fpt extension is used by AIR itself. I suspect it is an extension used by your client's application.
This looks VERY similar to a project I created for a client!
The .fpt file, as Joe suggests, a custom file type created for the use by the Air app. It's probably just a re-labeled zip file to be honest! Probably contains the slides of the presentation as a guess??
You shouldn't need to worry about the .fpt files. You should open them from within the Air app and not by opening them outside of the app - the OS might not recognise them unless the Air app has registered the .fpt extension upon it's own installation.
Hope that helps.
Thanks for all master, for your advise
I shall answer my client, and clear their doubt
Meeting you all in this forum, rocks me so much
thank god is friday, lets have some fun !
ps: Replying this in rap style is so spontaneous. anyways, thank you all so much