I have a shaped form that looks normal in the designer, but when actually showing the form in the application its just a gray square. The controls are missing on it as well...
Can't seem to attached files right now, so no screen shots.
This is an known issue. It will be addressed in one of the next major releases. In the meantime, you can use Visual Style Builder to create your custom shape. Then you should create a custom shape at runtime with the defined shape dimensions. I have attached a recorded video that demonstrates how you can do it.
Let me know if you have further question.
Greetings,
Svett
the Telerik team
Check out the Q1 2011 Roadmap for Telerik Controls for Windows Forms.