SQL Update/Insert/Delete Problem

Hi,I just upgraded my ASP.NET 2.0 BETA 2 environment to the final release of ASP.NET 2.0 VWD.Once the update was finished, I could open my website without any problems..... Now, I noticed that in the final release, some modifications have been included in the Membership Stored Procedure and other stored procedures. So I created a new database (SQL Express) and added my data again.After re-creating my SQLDataSources, I tryed to enable the Editing and Deleting option in VWD and once I run my web application, it seems when selecting editing and then update, it doesn't work anymore....This is my code :

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:IMMOASPNETDBConnectionString %>"

DeleteCommand="DELETE FROM aspnet_test WHERE (testID = @Original_testID)" SelectCommand="SELECT BuyID, BuyNL, BuyFR, Lastupdated FROM aspnet_Buy"

UpdateCommand="UPDATE aspnet_Buy SET BuyNL = @BuyNL, BuyFR = @BuyFR WHERE (BuyNL = @original_BuyID)">

<DeleteParameters>

<asp:Parameter Name="Original_testID" />

</DeleteParameters>

<UpdateParameters>

<asp:Parameter Name="BuyNL" />

<asp:Parameter Name="BuyFR" />

<asp:Parameter Name="original_BuyID" />

</UpdateParameters>

</asp:SqlDataSource>

&nbsp;<br />

&nbsp;<br />

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"

DataKeyNames="BuyID" DataSourceID="SqlDataSource1">

<Columns>

<asp:CommandField ShowEditButton="True" />

<asp:BoundField DataField="BuyID" HeaderText="BuyID" InsertVisible="False" ReadOnly="True"

SortExpression="BuyID" />

<asp:BoundField DataField="BuyNL" HeaderText="BuyNL" SortExpression="BuyNL" />

<asp:BoundField DataField="BuyFR" HeaderText="BuyFR" SortExpression="BuyFR" />

<asp:BoundField DataField="Lastupdated" HeaderText="Lastupdated" SortExpression="Lastupdated" />

</Columns>

</asp:GridView>Can someone help me with this ? What is wrong with the Update command ?Thanks to all,Bart