I am fiddling a bit with the GUI designer, and I must say that I'm really impressed. It is so easy and intuitive to work with.
I also watched the online demo, and I think it was well explained and thoroughly.
So I started out with a complex design right on, but when it came to invoke "Form main()" I got into troubles. To eliminate most variables possibly I started a new project and created a simple GUI (one label and one textfield). But I got the same error.
In both occasions I got this error:
The form bound to the class does not have a valid binding for the root component
I also checked the Component tree and it has no red line or yellow selections (I already made the mnemonics etc.)
Am I missing something?