What version of umbraco and ublogsy are you using?

There was a breaking change around 4.7 which caused something like this. I subsequently needed to upgraded the package.

Hi, I get this error... site just being built now, 2.1.1.1 on 4.10.0

Paul check your uBlogsy version again.  I made the mistake of installing uBlogsy from the Umbraco package Repository and for some reason it installs version 1.32 which is obviously not compatible with 4.10.x.  I manually download version 2.1.1.1 and installed it as a local package.  Everything works great!  Here is the link:

http://our.umbraco.org/projects/starter-kits/ublogsy

<div>
   <%-- <form id="form1" runat="server">
    <asp:HiddenField ID="hdnCount" Value="1" runat="server" />--%>
              <asp:Label ID="lblList" runat="server"></asp:Label><br />
      <asp:Label ID="lblMat" runat="server"></asp:Label><br />
      <asp:Label ID="lblDesc" runat="server"></asp:Label><br />
      <asp:Label ID="lblQuant" runat="server"></asp:Label><br />
      <asp:Label ID="lblUnitpc" runat="server"></asp:Label><br />
      <asp:Label ID="lblVAt" runat="server"></asp:Label><br />
      <asp:Label ID="lblCST" runat="server"></asp:Label><br />
      <asp:Label ID="lblFright" runat="server"></asp:Label><br />
      <asp:Label ID="lblAmt" runat="server"></asp:Label><br />
       
            <asp:Table ID="tblMain" runat="server" Height="125px">
     
     
     
                <asp:TableHeaderRow>
                    <asp:TableHeaderCell>list_Item</asp:TableHeaderCell>
                    <asp:TableHeaderCell>Material</asp:TableHeaderCell>
                    <asp:TableHeaderCell>Description</asp:TableHeaderCell>
                    <asp:TableHeaderCell>Quantity</asp:TableHeaderCell>
                    <asp:TableHeaderCell>Unit Price</asp:TableHeaderCell>
                    <asp:TableHeaderCell>VAT</asp:TableHeaderCell>
                    <asp:TableHeaderCell>CST</asp:TableHeaderCell>
                    <asp:TableHeaderCell>Frieght</asp:TableHeaderCell>
                    <asp:TableHeaderCell>Amount</asp:TableHeaderCell>
                </asp:TableHeaderRow>
                <asp:TableRow>
                    <asp:TableCell>
                        <asp:TextBox ID="txtLstItm" runat="server" Width="90"></asp:TextBox>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:TextBox ID="txtMat" runat="server" Width="90"></asp:TextBox>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:TextBox ID="txtDesc" runat="server" Width="90"
                    TextMode="MultiLine"></asp:TextBox>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:TextBox ID="txtQuant" runat="server" Width="50"></asp:TextBox>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:TextBox ID="txtUnitPrc" runat="server" Width="50"></asp:TextBox>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:DropDownList ID="ddlVAt" runat="server" Width="100">
                            <asp:ListItem Text="x" Value="0"></asp:ListItem>
                            <asp:ListItem Text="x" Value="1"></asp:ListItem>
                            <asp:ListItem Text="x" Value="2"></asp:ListItem>
                        </asp:DropDownList>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:DropDownList ID="ddlCST" runat="server" Width="100">
                            <asp:ListItem Text="x" Value="0"></asp:ListItem>
                            <asp:ListItem Text="y" Value="1"></asp:ListItem>
                            <asp:ListItem Text="z" Value="2"></asp:ListItem>
                        </asp:DropDownList>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:DropDownList ID="ddlFright" runat="server" Width="100">
                            <asp:ListItem Text="a" Value="0"></asp:ListItem>
                            <asp:ListItem Text="b" Value="1"></asp:ListItem>
                            <asp:ListItem Text="c" Value="2"></asp:ListItem>
                        </asp:DropDownList>
                    </asp:TableCell>
                    <asp:TableCell>
                        <asp:TextBox ID="txtAmount" runat="server" Width="100"></asp:TextBox>
                    </asp:TableCell>
                </asp:TableRow>
            </asp:Table>
            <br />
     
  <%--    <asp:Label ID="lblList" runat="server"></asp:Label><br />
      <asp:Label ID="lblMat" runat="server"></asp:Label><br />
      <asp:Label ID="lblDesc" runat="server"></asp:Label><br />
      <asp:Label ID="lblQuant" runat="server"></asp:Label><br />
      <asp:Label ID="lblUnitpc" runat="server"></asp:Label><br />
      <asp:Label ID="lblVAt" runat="server"></asp:Label><br />
      <asp:Label ID="lblCST" runat="server"></asp:Label><br />
      <asp:Label ID="lblFright" runat="server"></asp:Label><br />
      <asp:Label ID="lblAmt" runat="server"></asp:Label><br />--%>

            <asp:Button ID="btnNewRw0" runat="server" Text="New Row"
                OnClick="btnNewRw_Click" />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Button ID="Button2" runat="server" onclick="Button2_Click"
            Text="Show Value" PostBackUrl="~/sample.aspx" />
            <asp:TextBox ID="txtAns" runat="server"></asp:TextBox>
            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <br />
    <%--</form>--%>

I am grtting error that page can have only one server side form..so how can i use hidden feld without form tag or is there any alternative

BHSUHAN was this to do with ublogsy?

If so, more info please about what you're trying to do.

Please help me.

I am using umbraco 6.2.4 with ublogsy 3.1 and ucommentsy 1.1 .

While posting comment at first it works but at socond time it throw an error which is given below but after the deleting the registered mail id from umbraco admin panel at memeber section it works again but for one time only. 

Error is given below----------------------

Object reference not set to an instance of an object.

 Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   uCommentsy.BusinessLogic.Models.CommentInfo.b__2(Member x) in d:\_PROJECTS\Personal\uCommentsy\uCommentsyForUmb6\Source\uCommentsy.BusinessLogic\Models\CommentInfo.cs:141
   System.Linq.Enumerable.Count(IEnumerable`1 source, Func`2 predicate) +151
   uCommentsy.BusinessLogic.Models.CommentInfo.CreateNameForContentNode() in d:\_PROJECTS\Personal\uCommentsy\uCommentsyForUmb6\Source\uCommentsy.BusinessLogic\Models\CommentInfo.cs:139
   uCommentsy.BusinessLogic.Models.CommentInfo..ctor(String name, String email, String website, String message, Boolean isAuthor, String publicDomain, DateTime created) in d:\_PROJECTS\Personal\uCommentsy\uCommentsyForUmb6\Source\uCommentsy.BusinessLogic\Models\CommentInfo.cs:46
   uCommentsy.Mvc.Parts.Controllers.Partials.Forms.uCommentsyContactFormSurfaceController.Post(ContactFormModel model) in d:\_PROJECTS\Personal\uCommentsy\uCommentsyForUmb6\Source\uCommentsy.Mvc.Parts\Controllers\Partials\Forms\uCommentsyContactFormSurfaceController.cs:90
   lambda_method(Closure , ControllerBase , Object[] ) +180
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +211
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.Async.<>c__DisplayClass42.b__41() +28
   System.Web.Mvc.Async.<>c__DisplayClass8`1.b__7(IAsyncResult _) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +48
   System.Web.Mvc.Async.<>c__DisplayClass39.b__33() +57
   System.Web.Mvc.Async.<>c__DisplayClass4f.b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass4f.b__49() +223
   System.Web.Mvc.Async.<>c__DisplayClass37.b__36(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +48
   System.Web.Mvc.Async.<>c__DisplayClass2a.b__20() +24
   System.Web.Mvc.Async.<>c__DisplayClass25.b__22(IAsyncResult asyncResult) +102
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +43
   System.Web.Mvc.<>c__DisplayClass1d.b__18(IAsyncResult asyncResult) +14
   System.Web.Mvc.Async.<>c__DisplayClass4.b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +57
   System.Web.Mvc.Async.<>c__DisplayClass4.b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +47
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c__DisplayClass8.b__3(IAsyncResult asyncResult) +25
   System.Web.Mvc.Async.<>c__DisplayClass4.b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +47
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9514928
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

is working on a reply...