Hey there,I've got a VS 2010 Solution that runs fine, however, when I bring it into Expression Blend 4 I get a Stack Trace error. I did some digging and I've got it narrowed down to one line. As soon as I add a toolkit toolbar, I get the stack trace in Design view of the XAML. Some of you might suggest references are missing but I double checked and they're all there. Again, this runs fine in VS 2010 but not in Blend. Here's the line that throws the error. If I remove this line Blend is fine.<esriToolkit:Toolbar MaxItemHeight="80" MaxItemWidth="80"/>Here's the Full XAML.
<UserControl x:Class="SilverlightApplication1.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:esri="clr-namespace:ESRI.ArcGIS.Client;assembly=ESRI.ArcGIS.Client"
xmlns:esriSymbols="clr-namespace:ESRI.ArcGIS.Client.Symbols;assembly=ESRI.ArcGIS.Client"
xmlns:esriToolkit="clr-namespace:ESRI.ArcGIS.Client.Toolkit;assembly=ESRI.ArcGIS.Client.Toolkit"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<esri:Map x:Name="MyMap">
<esri:Map.Layers>
<esri:ArcGISTiledMapServiceLayer ID="StreetMapLayer"
Url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer" />
</esri:Map.Layers>
</esri:Map>
<Grid Height="110" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,10,10,0" >
<esriToolkit:Toolbar MaxItemHeight="80" MaxItemWidth="80"/>
</Grid>
</Grid>
</UserControl>
