HRESULT Error in Silverlight Project within Expression Blend

[Rick Casey]

I have a situation where I am trying to setup my project to use the RadMenu control.  I have copies of the Telerik 2011 Q2 Retail Binaries in a 3rdParty folder within the solution.  I reference those files in my project and create a simple implementation of the RadMenu,

<telerik:RadMenu Grid.Row="0">
    <telerik:RadMenuItem>
        <telerik:RadMenuItem>Title</telerik:RadMenuItem>
    </telerik:RadMenuItem>
</telerik:RadMenu>

At this point, I get the HRESULT error,
Exception: Error HRESULT E_FAIL has been returned from a call to a COM component.
Now, if I were to use the RadControls Silverlight Application project, and repeat the same workflow, I would get a page that would work just as expected.

So I ask, is adding the DLL's to a Silverlight project an unsupported means to include telerik controls?
Thanks
Rick

[Rick Casey]

In frustration, I uninstalled Q2 2011 and upgraded to Q2 2011 SP1 and that has fixed the buggy telerik install I must have had...

[Petar Mladenov]

Hello Rick Casey,

 We are glad that this works fine with the Q2 2011 SP. Unfortunately ,we are not aware of such existing issue with the Q2 2011 official Release. Feel free to ask if you have further questions.

Greetings,
Petar Mladenov
the Telerik team