WPF

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DoubleAnimation Storyboard.TargetProperty="RenderTransform.Angle" 

Cannot resolve all property references in the property path 'RenderTransform.Angle'. Verify that applicable objects support the properties.

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:ctrl="clr-namespace:Marois.Controls.ProgressIndicators">

<pre>
<Style TargetType="{x:Type ctrl:SpinningIndicator}">

    <Setter Property="Template">

        <Setter.Value>

            <ControlTemplate TargetType="{x:Type ctrl:SpinningIndicator}">

                <Border Background="{Binding Background, RelativeSource={RelativeSource TemplatedParent}}"
                        BorderBrush="{Binding BorderBrush, RelativeSource={RelativeSource TemplatedParent}}"
                        BorderThickness="{Binding BorderThickness, RelativeSource={RelativeSource TemplatedParent}}"
                        Margin="{Binding Margin, RelativeSource={RelativeSource TemplatedParent}}"
                        Padding="{Binding Padding, RelativeSource={RelativeSource TemplatedParent}}">

                    <Grid>

                        <Grid.RowDefinitions>
                            <RowDefinition Height="*"/>
                        </Grid.RowDefinitions>

                        <Canvas Grid.Row="0" 
                                Name="Canvas1"<br />
                                RenderTransformOrigin="0.5,0.5"<br />
                                HorizontalAlignment="Center"<br />
                                VerticalAlignment="Center" 
                                Width="120" 
                                Height="120">

                            <Canvas.RenderTransform>
                                <RotateTransform Angle="0" />
                            </Canvas.RenderTransform>

                            <Canvas.Style>
                                <Style TargetType="Canvas">
                                    <Style.Triggers>
                                        <Trigger Property="IsVisible" Value="True">

                                            <Trigger.EnterActions>
                                                <BeginStoryboard Name="Storyboard_Rotate">
                                                    <Storyboard RepeatBehavior="Forever">
                                                        <DoubleAnimation Storyboard.TargetProperty="RenderTransform.Angle"
                                                                         From="0" 
                                                                         To="360" 
                                                                         Duration="0:0:3"/>
                                                    </Storyboard>
                                                </BeginStoryboard>
                                            </Trigger.EnterActions>

                                            <Trigger.ExitActions>
                                                <StopStoryboard BeginStoryboardName="Storyboard_Rotate" />
                                            </Trigger.ExitActions>

                                        </Trigger>
                                    </Style.Triggers>
                                </Style>
                            </Canvas.Style>

                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="1.0" Canvas.Left="50" Canvas.Top="0" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.9" Canvas.Left="20.6107373853764" Canvas.Top="9.54915028125262" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.8" Canvas.Left="2.44717418524233" Canvas.Top="34.5491502812526" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.7" Canvas.Left="2.44717418524232" Canvas.Top="65.4508497187474" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.6" Canvas.Left="20.6107373853763" Canvas.Top="90.4508497187474" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.5" Canvas.Left="50" Canvas.Top="100" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.4" Canvas.Left="79.3892626146236" Canvas.Top="90.4508497187474" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.3" Canvas.Left="97.5528258147577" Canvas.Top="65.4508497187474" />
                            <Ellipse Width="20" Height="20" Stretch="Fill" Fill="{Binding IndicatorBrush}" Opacity="0.2" Canvas.Left="97.5528258147577" Canvas.Top="34.5491502812526" />

                        </Canvas>

                    </Grid>

                </Border>

            </ControlTemplate>

        </Setter.Value>

    </Setter>

</Style>

<TextBlock Grid.Row="2" 
            Grid.Column="1"
            Text="Close"
            beh:LocalizationBehavior.LocalizationKey="{x:Static const:LocalizationKeys.DlgCloseButtonCaption}"/>

private void TextBoxADCPDisplay_TextChanged(object sender, TextChangedEventArgs e)
{

    TextBoxADCPDisplay.SelectionStart = TextBoxADCPDisplay.Text.Length;
    TextBoxADCPDisplay.ScrollToEnd();
    if (TextBoxADCPDisplay.LineCount > 200)
    {
        TextBoxADCPDisplay.Select(0, 20);
        TextBoxADCPDisplay.SelectedText = "";
        
    }
}

public class MyComboBox : ComboBox
{
    static MyComboBox()
    {
        DefaultStyleKeyProperty.OverrideMetadata(typeof(MyComboBox),
            new FrameworkPropertyMetadata(typeof(MyComboBox)));
    }

    // Add some DP's and logic
}

public delegate void SetTextCallBackSMT(string text);

string SMTData = SpSMT.ReadExisting();
if (SMTData.Contains("\r"))
{
    modeSMT = ModeSMT.readLineSMTData;
}
else
{

    Invoke(new SetTextCallBackSMT(SetTextSMTDisplay), SMTData.ToString());

}

private void SetTextSMTDisplay(string text)
{
    this.RichTextBoxSMTDisplay.Text += text;
}

SP.Handshake = Handshake.None;
SP.DataReceived += new SerialDataReceivedEventHandler(SP_DataReceived);