RadGridView binding constraints exception

[Lester]

The Unhandled Exception is happening in Firefox and Chrome, IE seems to ignore it and continue to work.  It appears after a user successfully logs in and we are opening our Project Details control which has a RadGridView at the bottom third of the xaml page.  We get the following error: (This started after we changed the project from SL4 to Silverlight 5 , RadControls Version: 2012.2.607.1050).
The invocation of the contructor type 'Telerik.Windows.Controls.RadGridView' that matches the specified binding constraints threw an exception.[Line:224, Position:86] at System.Windows.Application.LoadComponent(Object component, UriresourceLocator)\ at _3by3.ProjectsPage.InitializeComponent()\n


What could be causing this?

-Lester

ProjectsPage.xaml

<telerik:RadGridView x:Name="dgProjectList" SelectionChanged="dgProjectList_SelectionChanged" ItemsSource="{Binding ProjectsList}" ShowColumnFooters="True" ShowGroupFooters="True" Width="1166" Margin="0,0,0,0" AutoGenerateColumns="False" BorderThickness="1" IsReadOnly="True" Height="226">
                         <telerik:RadGridView.Columns>
                             <telerik:GridViewDataColumn Header="Project Title" Width="290" DataMemberBinding="{Binding project_title}" >
                                 <telerik:GridViewColumn.Footer>
                                     <telerik:RadButton Content="Export to Excel XML" x:Name="butExport" Click="butExport_Click"  Margin="5,0"></telerik:RadButton>
                                 </telerik:GridViewColumn.Footer>
                             </telerik:GridViewDataColumn>
                             <telerik:GridViewDataColumn Header="Project No" Width="100" DataMemberBinding="{Binding project_no}">
                                 <telerik:GridViewDataColumn.AggregateFunctions>
                                     <telerik:CountFunction Caption="Count: " />
                                 </telerik:GridViewDataColumn.AggregateFunctions>
                             </telerik:GridViewDataColumn>
                             <telerik:GridViewDataColumn Header="Entity" Width="70" DataMemberBinding="{Binding client}" />
                             <telerik:GridViewDataColumn Header="Phase" Width="105" DataMemberBinding="{Binding phase}" />
                             <telerik:GridViewDataColumn Header="Status" Width="268" DataMemberBinding="{Binding status}" />
                             <telerik:GridViewDataColumn Header="Type Area" Width="150" DataMemberBinding="{Binding type}" />
                             <telerik:GridViewDataColumn Header="Type Project" Width="87" DataMemberBinding="{Binding type_project}" />
                             <telerik:GridViewDataColumn Header="Priority" Width="60" DataMemberBinding="{Binding priority}" />
                             <telerik:GridViewDataColumn Header="Date Rec" Width="88" DataMemberBinding="{Binding date_rec, StringFormat='MM/dd/yyyy'}" />
                         </telerik:RadGridView.Columns>
                     </telerik:RadGridView>

ProjectsPage.xaml.cs

public ProjectsPage()

{

    InitializeComponent();

    bind.MaxBufferSize = 2147483647;

    bind.MaxReceivedMessageSize = 2147483647;

    bind.SendTimeout = TimeSpan.FromMinutes(3);

   // proxy = new ProjectsServiceClient(bind, PRendpoint);

    proxy = new ProjectsServiceClient();

    CurrentProject = new project();

 

    //btnAddRouting.Visibility = Visibility.Collapsed;

   // ApplySecurityLevel();

    proxy.InsertDefTeamForProjectCompleted += new EventHandler<InsertDefTeamForProjectCompletedEventArgs>(proxy_InsertDefTeamForProjectCompleted);

    proxy.Get3x3AllContratorsCompleted += new EventHandler<Get3x3AllContratorsCompletedEventArgs>(proxy_Get3x3AllContratorsCompleted);

    proxy.get3x3AllContractorsByProjectCompleted += new EventHandler<get3x3AllContractorsByProjectCompletedEventArgs>(proxy_get3x3AllContractorsByProjectCompleted);

    proxy.getDocTypesCompleted += new EventHandler<getDocTypesCompletedEventArgs>(proxy_getDocTypesCompleted);

    proxy.GetEntitiesCompleted += new EventHandler<GetEntitiesCompletedEventArgs>(proxy_GetEntitiesCompleted);

    proxy.getMyTrackingCompleted += new EventHandler<getMyTrackingCompletedEventArgs>(proxy_getMyTrackingCompleted);

    proxy.getProjectsbyQueryCompleted += new EventHandler<getProjectsbyQueryCompletedEventArgs>(proxy_getProjectsbyQueryCompleted);

    proxy.getProjectsbyProjectNoCompleted += new EventHandler<getProjectsbyProjectNoCompletedEventArgs>(proxy_getProjectsbyProjectNoCompleted);

    proxy.getProjectListCompleted += new EventHandler<getProjectListCompletedEventArgs>(proxy_getProjectListCompleted);

    proxy.getTeamDetailsCompleted += new EventHandler<getTeamDetailsCompletedEventArgs>(proxy_getTeamDetailsCompleted);

    proxy.getUsersCompleted += new EventHandler<getUsersCompletedEventArgs>(proxy_getUsersCompleted);

    proxy.Save3x3ProjectCompleted += new EventHandler<Save3x3ProjectCompletedEventArgs>(proxy_Save3x3ProjectCompleted);

    proxy.Update3x3ProjectCompleted += new EventHandler<Update3x3ProjectCompletedEventArgs>(proxy_Update3x3ProjectCompleted);

 

    GetInitdata();

    initialTabSetup();

    Loaded += new RoutedEventHandler(ProjectsPage_Loaded);

    projectTabs.GetMyTracking();

}


[Vlad]

Hi,

 Do you have Telerik controls in the GAC? Can you remove them if this is the case? 

Regards,
Vlad
the Telerik team

[Lester]

The only Telerik assemblies in my GAC are reporting services assemblies.  There are no silverlight controls assemblies there.  Any other suggestions?
-Lester

[Vlad]

Hello,

 In this case unfortunately we are not aware what is causing the problem at your end. 

Regards,
Vlad
the Telerik team

[Pablo]

Hi, I had the same problem. I fixed it adding the System.Windows.Data reference. 
Regards.