I'm trying to get the field chooser to work and am not having any luck.  I am sure I am missing incredibly basic, but I can't figure it out.

Note that the field chooser attached to the data presenter, or popped up by using the field chooser button both fail to display and fields.

The xamdatagrid does however show columns for the persepctive fields.

Here is the xaml:

<DockPanel LastChildFill="True">
<dataPresenter:FieldChooser x:Name="FieldChooser"
DataPresenter="{Binding ElementName=DataGrid}"
Width="180"
Margin="2,2,2,10"
DockPanel.Dock="Left"
FieldDisplayOrder="SameAsDataPresenter"
/>
<dataPresenter:XamDataGrid x:Name="DataGrid"
DataSource="{Binding DataItems}"
GroupByAreaLocation="None" CellChanged="DataGrid_CellChanged"

>
<dataPresenter:XamDataGrid.FieldLayoutSettings>
<dataPresenter:FieldLayoutSettings AllowAddNew="False"
AllowDelete="True"
AutoFitMode="Always"
AutoGenerateFields="False"
HeaderPrefixAreaDisplayMode="FieldChooserButton"
AllowFieldMoving="Yes"
ResizingMode="Immediate"
SelectionTypeCell="None"
SelectionTypeField="None"
SelectionTypeRecord="Single"
/>
</dataPresenter:XamDataGrid.FieldLayoutSettings>
<dataPresenter:XamDataGrid.FieldLayouts>
<dataPresenter:FieldLayout IsDefault="true">
<dataPresenter:FieldLayout.Fields>
<dataPresenter:CheckBoxField Name="IsVisible"
Label="V"
Width="Auto"
HorizontalContentAlignment="Center"
/>

<dataPresenter:TemplateField Name="Stroke"
IsReadOnly="True"
Width="70"
Label="Color"
HorizontalContentAlignment="Center"
>
<dataPresenter:TemplateField.DisplayTemplate>
<DataTemplate>
<Rectangle Width="50"
Height="20"
Fill="{Binding Path=(igEditors:TemplateEditor.Editor).Value,
Converter={StaticResource ColorToBrushConverter},
RelativeSource={RelativeSource Self}}"/>
</DataTemplate>
</dataPresenter:TemplateField.DisplayTemplate>
<dataPresenter:TemplateField.EditTemplate>
<DataTemplate>
<ig:XamColorPicker Width="50"
Height="20"
SelectedColor="{Binding Path=(igEditors:TemplateEditor.Editor).Value,
RelativeSource={RelativeSource Self},
UpdateSourceTrigger=PropertyChanged,
Mode=TwoWay}" />
</DataTemplate>
</dataPresenter:TemplateField.EditTemplate>
</dataPresenter:TemplateField>

<dataPresenter:TextField Name="Path"
Label="File"
IsReadOnly="True"
AllowEdit="False"
Visibility="Collapsed"
Width="*"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Name="FileName"
Label="File"
IsReadOnly="True"
AllowEdit="False"
Width="*"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Speed"
IsReadOnly="True"
AllowEdit="False"
Width="Auto"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=Speed}"
TextAlignment="Right"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Frequency"
IsReadOnly="True"
AllowEdit="False"
Width="Auto"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=Frequency}"
TextAlignment="Right"
Visibility="Collapsed"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Stroke"
IsReadOnly="True"
AllowEdit="False"
Width="Auto"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=Stroke}"
TextAlignment="Right"
Visibility="Collapsed"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Amplitude"
IsReadOnly="True"
AllowEdit="False"
Width="75"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=Amplitude}"
TextAlignment="Right"
Visibility="Collapsed"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Rod Diameter"
IsReadOnly="True"
AllowEdit="False"
Width="Auto"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=RodDiameter}"
TextAlignment="Right"
Visibility="Collapsed"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Gas Test"
IsReadOnly="True"
AllowEdit="False"
Width="75"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=GasTest}"
TextAlignment="Right"
Visibility="Collapsed"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>

<dataPresenter:TextField Label="Gas Pressure"
IsReadOnly="True"
AllowEdit="False"
Width="Auto"
AlternateBinding="{Binding Converter={StaticResource DataItemViewModelConstantConverter}, ConverterParameter=GasPressure}"
TextAlignment="Right"
Visibility="Collapsed"
>
<dataPresenter:TextField.CellBindings>
<dataPresenter:CellBinding Property="Foreground"
Target="CellValuePresenter"
Binding="{Binding Path=DataItem.Stroke, Converter={StaticResource ColorToBrushConverter}}"
/>
</dataPresenter:TextField.CellBindings>
</dataPresenter:TextField>
</dataPresenter:FieldLayout.Fields>
</dataPresenter:FieldLayout>
</dataPresenter:XamDataGrid.FieldLayouts>

<dataPresenter:XamDataGrid.FieldSettings>
<dataPresenter:FieldSettings AllowCellVirtualization="True"
AllowCrossFieldRecordFiltering="False"
AllowFixing="NearOrFar"
AllowGroupBy="True"
AllowRecordFiltering="False"
AllowHiding="Never"
AllowResize="False"
AllowSummaries="False"
AutoSizeOptions="All"
IsAutoEditModeEnabled="False"
LabelClickAction="SortByMultipleFields"
>
</dataPresenter:FieldSettings>

</dataPresenter:XamDataGrid.FieldSettings>
</dataPresenter:XamDataGrid>
</DockPanel>