Thank you for writing.
I have followed several times the steps you have described, but I was not able to observe such behavior. Would you please provide us with some more details about this case like some screenshots which describe which items are missing. If you have received an error message, it would also be useful to know what the message was.
At this moment I can only suggest uninstalling any previously installed versions of our products and make a fresh install of the one you are using.
Please let me know if this helped you. Feel free to ask if you have any further questions.
All the best,
the Telerik team
Q2’11 SP1 of RadControls for WinForms is available for download (see what's new); also available is the Q3'11 Roadmap for Telerik Windows Forms controls.