On x64 Windows 7 RTM with VS2010 RC and Blend 4 RC, I'm having the following issue with the RadControls_for_Silverlight4_RC_TRIAL I recently downloaded from your site. From a Silverlight 4 SketchFlow project that builds and works fine, I did this in Blend:
+ added reference to Telerik.Windows.Controls.Scheduler.dll
+ added a RadScheduler as a child of a panel in a <UserControl>
+ built and ran the project
The RadScheduler showed up as expected. I then opened the same solution in VS2010 and attempted to build, but that resulted in the following error:
+ Could not load file or assembly 'System.Windows, Version=220.127.116.11, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The system cannot find the file specified.
Upon returning to Blend, I found that I was now getting the following exception on the artboard when trying to view the UserControl to which I added the RadScheduler:
+ Exception: Error HRESULT E_FAIL has been returned from a call to a COM component.
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
Removing the RadScheduler from the UserControl cleared up this exception, and the app still builds/runs from Blend, but VS2010 is having issues with System.Windows assembly - even after removing the Telerik assembly reference from the project.
I've tried all the cures I've found posted here and on silverlight.net (run VS2010 as admin, copy Telerik assemblies to PublicAssemblies + PrivateAssembiles folders), but to no avail.
I'd appreciate any help you could provide on this - thanks!