I am going through the flex in a week training and I'm trying to use the Spark form in Flashbuilder 4, but it does not appear in the components windows. When I drag a form from there it is an mx form control.
The project is set to use the 4.5 sdk and I can even create the tag in the code view, but when I do that is doesn't show up in the designer...
How can I get the spark form control to either show up in the designer when created in the code view, or get the control to show up in the components window so I can drag it in?