I have a App.fla file on a path and a App.as file on the same path.

On the Class field I put "App" and on the ActionScript Settings Source path there is "." which means the same path of the .fla file, right?

I open the App.fla file and click on the little "pencil" icon in order to edit App.as but then Flash whether tells me there's no class file associated or it opens a new ActionScript file.

So I can't do nothing , I even copied all code into the App.as , and pasted into the new ActionScript file it generates when I click the little pencil button. It still cannot find the god damned class .

A little detail, I'm using Mac OS X 10.6.2.
I've been working full time with flash on a Windows and that never happened to me before. That hasn't happend to me on Mac either (though I have hardly used it to do FLASH/AS).

This is driving me nuts, please help.