UpdatePanel on Gridview select command causes error inside multiview

When i click the command field select button i get error:Invalid postback or callback argument

<asp:View ID="View2" runat="server"> <asp:UpdatePanel id="updatepanel2" runat="server" > <ContentTemplate> <table style="width: 100%; border-width: 1px; border-color: #666; border-style: solid"> <tr> <td> <p> <asp:GridView ID="UserAccounts" runat="server" DataKeyNames="UserName" CellPadding="4" ForeColor="#333333" /> <Columns> <asp:CommandField HeaderText="Manage" ShowCancelButton="False" CausesValidation=false ShowSelectButton="True" /> <asp:BoundField DataField="UserName" HeaderText="UserName" /> <asp:BoundField DataField="Email" HeaderText="Email" /> </Columns> </asp:GridView> </p> </td> </tr> </table> </ContentTemplate> </asp:UpdatePanel> </asp:View>