PHP x Flash

Hi, guys!
I have a system developed in PHP and Flash. It is divided into layers (MVC). I'm facing the following issue: the form, which is done in Flash, sends data to PHP via POST. I threw an exception printing what is coming from the form. When I click "Save" the data come black. As what I filled out the form remains on the screen, if I click again on "Save" the data are sent normally.

What can it be? Anyone got a light?

Thanks in advance!

Hi, guys!
It was a code issue. Thanks!

However, now the application only works in Chrome. In IE it's random. Every other time, it works. Does anyone know what can be the cause of that intermittency of IE?

Thanks!