Hello
I am getting another business-critical and rather annoying error from the Infragistics XamDataGrid.
I use NetAdvantage for Win Client 2010 Volume 2.

The error occurs a little randomly, but I think I have isolated two scenarios:

1)
When the grid is within a TabControl and tab selection is changed

2)
When the DataSource bound collection is cleared or modified.

The error occurrs, but within the XamDataGrid control, so I have no possibility to make a breakpoint or pause VS2008 so I can change the code. Because error does not reflect any file and line number in the code.

Here is my XAML code for the grid.
 - The "DataSource" is bound to an ObservableCollection<Shipment>
 - The "ActiveDataItem is bound to a single Shipment-class

 <kwg:DataGrid DataSource="{Binding Items}"
                      ActiveDataItem="{Binding ActiveItem, Mode=TwoWay}"
                      Visibility="{Binding ContentVisibility}"
                      GridLayout="{Binding ShipmentsGridLayout, Mode=TwoWay}"
                      LayoutSavedCommand="{Binding GridLayoutSaveCommand}"
                      RefreshGridCommand="{Binding RefreshGridCommand}"
                      CommandParameter="shipment_overview"
                      Theme="Office2k7Silver"
                      Background="GhostWhite"
                      IsSynchronizedWithCurrentItem="True"
                      AutoFit="False"
                      AllowDrop="False">
            <kwg:DataGrid.FieldLayoutSettings>
                <kwg:FieldLayoutSettings HeaderPrefixAreaDisplayMode="FieldChooserButton"
                                         AllowAddNew="False"
                                         AllowDelete="False"
                                         HighlightAlternateRecords="False"
                                         SelectionTypeRecord="Extended"
                                         SelectionTypeField="Extended"
                                         SelectionTypeCell="None"
                                         AutoGenerateFields="False" />
            </kwg:DataGrid.FieldLayoutSettings>
            <kwg:DataGrid.FieldLayouts>
                <idp:FieldLayout Key="Shipment">
                    <idp:FieldLayout.FieldSettings>
                        <kwg:FieldSettings AllowRecordFiltering="True"
                                           AllowGroupBy="True"
                                           AllowResize="True"
                                           AllowEdit="False"
                                           CellClickAction="SelectRecord"/>
                    </idp:FieldLayout.FieldSettings>
                    <idp:Field Name="CreatedDate" Converter="{StaticResource formatter}" ConverterParameter="\{0:yyyy-MM-dd hh:mm\}" Label="Created" Column="0" Visibility="Visible" Width="80">
                        <idp:Field.Settings>
                            <idp:FieldSettings EditAsType="{x:Type sys:String}"/>
                        </idp:Field.Settings>
                    </idp:Field>
                    <idp:Field Name="Assignmentid" Label="Assignmend Id" Column="1" Visibility="Visible" Width="150" />
                    <idp:Field Name="MovementReferenceNumber" Label="MRN" Column="2" Visibility="Visible" Width="80" />
                    <idp:Field Name="DeclarationType" Label="Declaration type" Column="3" Visibility="Visible" Width="80" />
                    <idp:Field Name="DeclarationStatus" Label="Status" Column="4" Visibility="Visible" Width="80">
                        <idp:Field.Settings>
                            <idp:FieldSettings>
                                <idp:FieldSettings.CellValuePresenterStyle>
                                    <Style TargetType="{x:Type idp:CellValuePresenter}">
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding Path=DataItem.DeclarationStatus}" Value="ERR">
                                                <Setter Property="Foreground" Value="Red"/>
                                            </DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </idp:FieldSettings.CellValuePresenterStyle>
                            </idp:FieldSettings>
                        </idp:Field.Settings>
                    </idp:Field>
                    <idp:Field Name="TotalNumberOfItems" Label="Total # of items" Column="5" Visibility="Visible" Width="80">
                        <idp:Field.Settings>
                            <idp:FieldSettings>
                                <idp:FieldSettings.EditorStyle>
                                    <Style TargetType="{x:Type ide:XamCurrencyEditor}">
                                        <Setter Property="Format" Value=".###"/>
                                    </Style>
                                </idp:FieldSettings.EditorStyle>
                            </idp:FieldSettings>
                        </idp:Field.Settings>
                    </idp:Field>
                    <idp:Field Name="TotalNumberOfPackages" Label="Total # of packages" Column="6" Visibility="Visible" Width="80">
                        <idp:Field.Settings>
                            <idp:FieldSettings>
                                <idp:FieldSettings.EditorStyle>
                                    <Style TargetType="{x:Type ide:XamCurrencyEditor}">
                                        <Setter Property="Format" Value=".###"/>
                                    </Style>
                                </idp:FieldSettings.EditorStyle>
                            </idp:FieldSettings>
                        </idp:Field.Settings>
                    </idp:Field>
                    <idp:Field Name="TotalGrossWeight" Label="Total gross weight" Column="7" Visibility="Visible" Width="80">
                        <idp:Field.Settings>
                            <idp:FieldSettings>
                                <idp:FieldSettings.EditorStyle>
                                    <Style TargetType="{x:Type ide:XamCurrencyEditor}">
                                        <Setter Property="Format" Value=".###"/>
                                    </Style>
                                </idp:FieldSettings.EditorStyle>
                            </idp:FieldSettings>
                        </idp:Field.Settings>
                    </idp:Field>
                    <idp:Field Name="Declarant" Label="Declarant" Column="8" Visibility="Visible" Width="100" />
                    <idp:Field Name="PlaceOfLoading" Label="Place of load" Column="9" Visibility="Visible" Width="80" />
                    <idp:Field Name="PlaceOfUnloading" Label="Place of unload" Column="10" Visibility="Visible" Width="80" />
                    <idp:Field Name="Consignor" Label="Consignor" Column="11" Visibility="Visible" Width="100" />
                    <idp:Field Name="Consignee" Label="Consignee" Column="12" Visibility="Visible" Width="100" />
                    <idp:Field Name="NotifyParty" Label="Notify party" Column="13" Visibility="Visible" Width="100" />
                    <idp:Field Name="LodgingPerson" Label="Lodging person" Column="14" Visibility="Visible" Width="100" />
                    <idp:Field Name="Representative" Label="Representative" Column="15" Visibility="Visible" Width="100" />
                    <idp:Field Name="Carrier" Label="Carrier" Column="16" Visibility="Visible" Width="100" />
                    <idp:Field Name="CustomerId" Label="Customer Id" Column="17" Visibility="Visible" Width="150" />
                    <idp:Field Name="UserId" Label="User Id" Column="18" Visibility="Visible" Width="80" />
                    <idp:Field Name="LastChangedBy" Label="Last changed by" Column="19" Visibility="Visible" Width="80" />
                    <!--<idp:Field Name="AIVStatus" Label="AIV Status" Column="20" Visibility="Visible" Width="80" />-->
                </idp:FieldLayout>
            </kwg:DataGrid.FieldLayouts>
            <kwg:DataGrid.ContextMenu>
                <ContextMenu>
                    <MenuItem Uid="mp_cmiOpen" Name="cmiOpen" Header="Open" Command="{Binding OpenICSCommand}" IsEnabled="{Binding OpenICSIsEnabled}" FontWeight="Bold" />
                    <MenuItem Uid="mp_cmiNew" Header="New" IsEnabled="{Binding NewIsEnabled}">
                        <MenuItem Uid="mp_cmiNewENS" Name="cmiNewENS" Header="Entry Summary Declaration [ENS]" Command="{Binding NewENSCommand}" IsEnabled="{Binding NewENSIsEnabled}" />
                        <MenuItem Uid="mp_cmiNewEXS" Name="cmiNewEXS" Header="Exit Summary Declaration [EXS]" Command="{Binding NewEXSCommand}" IsEnabled="{Binding NewEXSIsEnabled}"  />
                    </MenuItem>
                    <MenuItem Uid="mp_cmiMake" Header="Make" IsEnabled="{Binding MakeIsEnabled}">
                        <MenuItem Uid="mp_cmiMakeAMD" Name="cmiMakeAMD" Header="Amendment [AMD]" Command="{Binding MakeAMDCommand}" IsEnabled="{Binding MakeAMDIsEnabled}" />
                        <MenuItem Uid="mp_cmiMakeARN" Name="cmiMakeARN" Header="Arrival Notification [ARN]" Command="{Binding MakeARNCommand}" IsEnabled="{Binding MakeARNIsEnabled}" />
                        <MenuItem Uid="mp_cmiMakeDIV" Name="cmiMakeDIV" Header="Diversion Request [DIV]" Command="{Binding MakeDIVCommand}" IsEnabled="{Binding MakeDIVIsEnabled}" />
                    </MenuItem>
                    <MenuItem Uid="mp_cmiDelete" Name="cmiDelete" Header="Delete" Command="{Binding DeleteICSCommand}" IsEnabled="{Binding DeleteICSIsEnabled}" />
                    <Separator/>
                </ContextMenu>
            </kwg:DataGrid.ContextMenu>
        </kwg:DataGrid>