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Hi,
I noticed that the Source for the Telerik Themes (Windows7Theme, etc..) are not correct, some of the sourcefiles are not included in the Visual Studio project files. This causes crashes in the Appliaction if you build your own Themes on bases of the Telerik Themes.
Including the missing files (e.g. Telerik.Windows.Controls.Charting.xaml) to the Visual Studio project solved the issue for us.
Best Regards,
Matthias Bibo