AS3 dynamic font embedding bug

Hi all,
Is there a known bug for the following case?
Case:
A project I'm working on doesn't seem to handle font embedding correctly when the font is added dynamically using actionscript. When I test my movie it does not display the embedded font at all. Curious about this is, that when I create an empty project using the same code and then embed the font and test the movie it displays the font without any problem.
Sometimes a reboot of the machine I'm working on will suffice to make the embedding work again, but sometimes is not all the time. So I was wondering if there was a memory related bug that causes this behavior. If so, is there any sight on a solution for this bug? It's more than annoying to reboot eight times a day, just to test a movie.
How did I embed the font:
1. Create a "New Font" in the Library, set the properties and give it a classname.
2. Using actionscript to embed the font in a dynamically generated TextField.
package{
import flash.display.MovieClip;
import flash.display.text.Font;
import flash.display.text.TextFormat;
import flash.display.text.TextField;
public class MyClass extends MovieClip{
var myFont:Font;
var myTextFormat:TextFormat;
var myTextField:TextField;
public function MyClass():void{
myFont = new Font1();
myTextFormat = new TextFormat();
myTextFormat.font = myFont.fontName;
myTextField = new TextField();
myTextField.defaultTextFormat = myTextFormat;
myTextField.embedFonts = true;
myTextField.text = "Lorem Ipsum...";
addChild(myTextField);
Cheers!
Do

I don't have Flash IDE on this machine so I cannot say for sure but try to register font:
public function MyClass():void {
     Font.registerFont(Font1);
     myFont = new Font1();
     // the rest...

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