RagePageView not displayed in RadTab

[John]

I have a Hierarchical RadGrid with a details table defined as a nestedViewTamplate which then also contains a RadGrid inside a RadPageView which is assigned to a RadTab.
I cannot get the second RadGrid to appear in the assigned RadTab for some reason.

Here is my source.

<telerik:RadGrid ID="RadGrid1" runat="server" Skin="Centive" EnableEmbeddedSkins="False"
    AutoGenerateColumns="False" CellSpacing="0" GridLines="None" OnNeedDataSource="RadGrid1_NeedDataSource"
    OnItemDataBound="RadGrid1_ItemDataBound" OnDetailTableDataBind="RadGrid1_DetailTableDataBind">
    <MasterTableView DataKeyNames="CompanyId,CentiveId,PlanId" Name="MainMasterTable">
        <DetailTables>
            <telerik:GridTableView DataKeyNames="CompanyId,CentiveId,PlanId,AwardId" Name="AwardDetails">
                <NestedViewTemplate>
                    <telerik:RadTabStrip ID="TabStrip1" runat="server" MultiPageID="MultiPage1" Skin="Centive"
                        EnableEmbeddedSkins="false">
                        <Tabs>
                            <telerik:RadTab runat="server" Text="Transactions" PageViewID="PageView1" Selected="true">
                            </telerik:RadTab>
                            <telerik:RadTab runat="server" Text="Vestings" PageViewID="PageView2">
                            </telerik:RadTab>
                            <telerik:RadTab runat="server" Text="Tax" PageViewID="PageView3">
                            </telerik:RadTab>
                        </Tabs>
                    </telerik:RadTabStrip>
                    <telerik:RadMultiPage runat="server" ID="MultiPage1" SelectedIndex="0" RenderSelectedPageOnly="false" SkinID="Centive" EnableEmbeddedBaseStylesheet="true">
                        <telerik:RadPageView runat="server" ID="PageView1">
                            <telerik:RadGrid runat="server" ID="RadGrid2" OnNeedDataSource="RadGrid2_NeedDataSource"
                                AutoGenerateColumns="false" Skin="Centive" EnableEmbeddedSkins="false">
                                <MasterTableView DataKeyNames="CentiveId, CompanyId, PlanId, AwardId" Name="SecondMainMasterTable">
                                    <Columns>
                                        <telerik:GridBoundColumn HeaderText="CentiveId" DataField="CentiveId" Visible="false">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="CompanyId" DataField="CompanyId" Visible="false">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="Plan" DataField="PlanId" Visible="false">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="Award" DataField="AwardId" Visible="false">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="Type" DataField="Type">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="Date" DataField="Date" DataFormatString="{0:dd/MM/yyyy}">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="Units" HeaderStyle-HorizontalAlign="Right" DataField="Units"
                                            DataFormatString="{0:N0}">
                                            <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                                            <ItemStyle HorizontalAlign="Right" />
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn HeaderText="Price" DataField="Price" DataFormatString="{0:N0}"
                                            HeaderStyle-HorizontalAlign="Right">
                                            <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                                            <ItemStyle HorizontalAlign="Right" />
                                        </telerik:GridBoundColumn>
                                    </Columns>
                                </MasterTableView>
                            </telerik:RadGrid>
                        </telerik:RadPageView>
                    </telerik:RadMultiPage>
                </NestedViewTemplate>
                <Columns>
                    <telerik:GridBoundColumn HeaderText="CentiveId" DataField="CentiveId" Visible="false">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="CompanyId" DataField="CompanyId" Visible="false">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Plan" DataField="PlanId" Visible="false">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Award" DataField="AwardId">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Awarded" HeaderStyle-HorizontalAlign="Right"
                        DataField="Awarded" DataFormatString="{0:N0}">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Exercised" DataField="Exercises" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Transfered" DataField="Transfers" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Sold" DataField="Sales" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Lapsed" DataField="Lapses" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Share Splits" DataField="Share Splits" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Rights Issues" DataField="Rights Issues" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn HeaderText="Outstanding" DataField="Outstanding" DataFormatString="{0:N0}"
                        HeaderStyle-HorizontalAlign="Right">
                        <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                        <ItemStyle HorizontalAlign="Right" />
                    </telerik:GridBoundColumn>
                </Columns>
            </telerik:GridTableView>
        </DetailTables>
        <Columns>
            <telerik:GridBoundColumn HeaderText="" DataField="Approved" Visible="false">
            </telerik:GridBoundColumn>
            <telerik:GridImageColumn HeaderText="" UniqueName="ApprovedImage">
                <ItemStyle HorizontalAlign="Left" Width="1" />
            </telerik:GridImageColumn>
            <telerik:GridBoundColumn HeaderText="CentiveId" DataField="CentiveId" Visible="false">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="CompanyId" DataField="CompanyId" Visible="false">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Plan" DataField="PlanId">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Awarded" HeaderStyle-HorizontalAlign="Right"
                DataField="Awarded" DataFormatString="{0:N0}">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Exercised" DataField="Exercises" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Transfered" DataField="Transfers" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Sold" DataField="Sales" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Lapsed" DataField="Lapses" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Share Splits" DataField="Share Splits" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Rights Issues" DataField="Rights Issues" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn HeaderText="Outstanding" DataField="Outstanding" DataFormatString="{0:N0}"
                HeaderStyle-HorizontalAlign="Right">
                <HeaderStyle HorizontalAlign="Right"></HeaderStyle>
                <ItemStyle HorizontalAlign="Right" />
            </telerik:GridBoundColumn>
        </Columns>
    </MasterTableView>
</telerik:RadGrid>

[John]

I answered my own question.

I need to have more then one pageview in order for the content to be placed in the correct tab.