Hi thanks for the response. A whole solution to try against would take me some time to slap together since what it sits in now is gigantic, however here's an abridged version of the view. One of my guys wants to blame the FillSymbol, but I think something else is the culprit, but so far I haven't been able to retrieve any hint of the error to help me investigate. Let me know if anything jumps out at you, another pair of eyes is greatly appreciated!<UserControl.Resources>
<esri:SimpleMarkerSymbol x:Key="RedMarkerSymbol" Color="Red" Size="12" Style="Circle" />
<esri:TextSymbol x:Key="THELabelSymbol" FontSize="12"/>
<esri:SimpleLineSymbol x:Key="DrawLineSymbol" Color="Green" Width="4" />
<esri:SimpleFillSymbol x:Key="DrawFillSymbol" Fill="#3300FF00" BorderBrush="Green" BorderThickness="2" />
<esri:PictureMarkerSymbol x:Name="DropPinMarkerSymbol" OffsetX="0" OffsetY="23" Source="........blah.png"/>
<esri:FillSymbol x:Key="THEFill">
<esri:FillSymbol.ControlTemplate>
<ControlTemplate>
<Path x:Name="Element"
Fill="#FFCCCCCC"
Stroke="Blue"
StrokeThickness="3" StrokeDashArray="3,5" StrokeDashCap="Triangle" StrokeStartLineCap="Round" StrokeEndLineCap="Round" StrokeLineJoin="Round"
Opacity=".35"/>
</ControlTemplate>
</esri:FillSymbol.ControlTemplate>
</esri:FillSymbol>
<esri:FillSymbol x:Key="cluFill" Fill="{Binding THEFillColor}">
<esri:FillSymbol.ControlTemplate>
<ControlTemplate>
<Path x:Name="Element"
Stroke="#FFFF00"
StrokeThickness="3"
StrokeDashArray="2,1"
StrokeDashOffset="0"
Opacity="1"
Fill="{Binding Symbol.Fill}"
StrokeStartLineCap="Round"
StrokeEndLineCap="Round"
StrokeLineJoin="Round" Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation BeginTime="00:00:00"
Storyboard.TargetName="Element"
Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:0.25" />
<DoubleAnimation BeginTime="00:00:00"
Storyboard.TargetName="Element"
Storyboard.TargetProperty="StrokeThickness" To="4" Duration="0:0:0.25" />
<DoubleAnimation BeginTime="0:0:0" Storyboard.TargetName="Element" Storyboard.TargetProperty="StrokeDashOffset"
Duration="0:4:0" RepeatBehavior="Forever" From="1000" To="0"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation BeginTime="00:00:00"
Storyboard.TargetName="Element"
Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:0.25" />
<DoubleAnimation BeginTime="00:00:00"
Storyboard.TargetName="Element"
Storyboard.TargetProperty="StrokeThickness" To="3" Duration="0:0:0.25" />
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Path.Effect>
<DropShadowEffect Opacity="0"/>
</Path.Effect>
</Path>
</ControlTemplate>
</esri:FillSymbol.ControlTemplate>
</esri:FillSymbol>
<esri:DynamicLayerInfoCollection x:Key="DynamicLayers">
<esri:DynamicLayerInfo ID="0" Name="Blah" DefaultVisibility="False" >
<esri:DynamicLayerInfo.Source>
<esri:LayerMapSource MapLayerID="0"/>
</esri:DynamicLayerInfo.Source>
</esri:DynamicLayerInfo>
<esri:DynamicLayerInfo ID="1" Name="Blah1" DefaultVisibility="True">
<esri:DynamicLayerInfo.Source>
<esri:LayerMapSource MapLayerID="1"/>
</esri:DynamicLayerInfo.Source>
</esri:DynamicLayerInfo>
</esri:DynamicLayerInfoCollection>
<esri:LayerDrawingOptionsCollection x:Key="LayerDrawing">
<esri:LayerDrawingOptions LayerID="5">
<esri:LayerDrawingOptions.Renderer>
<esri:SimpleRenderer>
<esri:SimpleFillSymbol BorderBrush="Brown" Fill="Transparent" BorderThickness="2"/>
</esri:SimpleRenderer>
</esri:LayerDrawingOptions.Renderer>
</esri:LayerDrawingOptions>
<esri:LayerDrawingOptions LayerID="4">
<esri:LayerDrawingOptions.Renderer>
<esri:SimpleRenderer>
<esri:SimpleFillSymbol BorderBrush="SaddleBrown" Fill="Transparent" BorderThickness="2"/>
</esri:SimpleRenderer>
</esri:LayerDrawingOptions.Renderer>
</esri:LayerDrawingOptions>
</esri:LayerDrawingOptionsCollection>
<esri:EditGeometry x:Key="MyEditor" IsEnabled="True"
Map="{Binding ElementName=Map}"
/>
<esri:Draw x:Key="Drawer"
Map="{Binding ElementName=Map}"
DrawMode="None"
FillSymbol="{StaticResource DrawFillSymbol}"
LineSymbol="{StaticResource DrawLineSymbol}"
DrawComplete="Drawer_OnDrawComplete"/>
<esri:Draw x:Key="PinDrawer"
Map="{Binding ElementName=Map}"
DrawMode="Point"
DrawComplete="PinDrawer_OnDrawComplete" />
<esri:Draw x:Key="BinDrawer"
Map="{Binding ElementName=Map}"
DrawMode="Point"
DrawComplete="BinDrawer_OnDrawComplete" />
</UserControl.Resources>
<Grid x:Name="LayoutRoot" Background="{StaticResource StandardLightAccentLineBrush}">
<esri:Map x:Name="Map" controls:CursorSet.ID="{Binding CursorSet}"
WrapAround="true"
IsLogoVisible="False">
<esri:Map.Extent>
<esri:Envelope XMin="-1.38957793088E7" YMin="2812752.3691999987" XMax="-7449272.308800001" YMax="6352014.369199999" >
<esri:Envelope.SpatialReference>
<esri:SpatialReference WKID="3857"/>
</esri:Envelope.SpatialReference>
</esri:Envelope>
</esri:Map.Extent>
</esri:Map>
<esri:ScaleLine Map="{Binding ElementName=Map}" Margin="10" HorizontalAlignment="Left" VerticalAlignment="Bottom" Foreground="White">
<esri:ScaleLine.Effect>
<DropShadowEffect ShadowDepth="2" BlurRadius="4" Opacity="0.75"/>
</esri:ScaleLine.Effect>
</esri:ScaleLine>
<esri:MapProgressBar Map="{Binding ElementName=Map}"
HorizontalAlignment="Center" VerticalAlignment="Bottom"
Width="200" Height="36" Margin="25" Style="{StaticResource MyCustomProgressBarStyle}"/>
<esri:Navigation Margin="5" IsTabStop="False"
Map="{Binding ElementName=Map}"
HorizontalAlignment="Left" VerticalAlignment="Top">
<esri:Navigation.Resources>
<Style TargetType="Button">
<Setter Property="IsTabStop" Value="False"/>
</Style>
</esri:Navigation.Resources>
</esri:Navigation>
</Grid>
</UserControl>