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"Object reference not set to an instance of object" after chose theme by wizard

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Installer and Visual Studio Extensions
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Dario Concilio
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Dario Concilio asked on 08 Sep 2016, 02:38 PM

The tag Application in App.xaml is in error, after apply new theme at project

I chose VisualStudio2013 theme, I click "Configure Project" on my project, chose controls and theme, after that, it appears strange error:

"Object reference not set to an instance of object" highlighting Application tag. Why?

 

    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/System.Windows.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.Chart.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.Docking.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.FixedDocumentViewers.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.Input.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.GridView.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.VisualStudio2013;component/Themes/Telerik.Windows.Controls.ScheduleView.xaml" />
                <ResourceDictionary Source="Helpers/Themes/Telerik.ReportViewer.Wpf.xaml"/>
                <ResourceDictionary Source="Styles/CommonDictionary.xaml" />
                <ResourceDictionary Source="Styles/IconDictionary.xaml" />
                <ResourceDictionary Source="Styles/ToolBarDictionary.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

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Martin
Telerik team
answered on 09 Sep 2016, 09:07 AM
Hello Dario,

I can suggest you clean and rebuild the project. Since you are changing dependencies, this can happen.
furthermore, you can try manually cleaning the content of the obj and bin folders of the project, clean and rebuild.

This error is actually non-breaking, and it should get resolved after cleaning that cache and restarting VisualStudio. You need not worry about it.

Regards,
Martin
Telerik by Progress
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Installer and Visual Studio Extensions
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Dario Concilio
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Answers by
Martin
Telerik team
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