Thanks for all your answer ... I checked my configuration and made sure 9600 is not using any extender. No problems with script too, because the button is a simple button with just a "jump and execute" action. By the way, many buttons created by the setup wizard in the pronto edit are made that way and does not work on my 9600.
I think The problem could be simply that "jump and execute" actions are new in pronto edit v.2 (they were not supported in pronto edit v1.x) and perhaps they require the last firmware version, which still I need to check on my 9600. I will let you know.