Hi,

If I try to activate the menu of gridPanel located in 'Tab B' browser console generates the error "Uncaught TypeError: Cannot read property 'enable' of null". If I remove 'TAB A' or delete filter feature everything works fine.

Am I doing something wrong?

Tanks in advance,

P.D: using Ext.NET ver 2.5.2

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Collections.Generic" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html>
<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        this.Store1.DataSource = new List<Class1> 
         { 
            new Class1(1, "P1", "T1.1", 1),
            new Class1(2, "P1", "T1.2", 4),
            new Class1(3, "P2", "T2.1", 3),
            new Class1(4, "P3", "T3.1", 5),
            new Class1(5, "P3", "T3.2", 4),
         };
    }

    public class Class1
    {
        public Class1(int pId, string pAtt1, string pAtt2, int pAtt3)
        {
            this.Id = pId;
            this.Att1 = pAtt1;
            this.Att2 = pAtt2;
            this.Att3 = pAtt3;
        }

        public int Id { get; set; }
        public string Att1 { get; set; }
        public string Att2 { get; set; }
        public int Att3 { get; set; }
    }
</script>

<html>
<head runat="server">
    <title>Test</title>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
        <ext:Store ID="Store1" runat="server">
            <Model>
                <ext:Model ID="Model1" runat="server" IDProperty="Id">
                    <Fields>
                        <ext:ModelField Name="Id" Type="Int" />
                        <ext:ModelField Name="Att1" />
                        <ext:ModelField Name="Att2" />
                        <ext:ModelField Name="Att3" Type="Int" />
                    </Fields>
                </ext:Model>
            </Model>
        </ext:Store>

        <ext:TabPanel ID="TabPanel1" runat="server">
            <Items>
                <ext:FormPanel ID="FormPanel1" runat="server" Title="Tab A" />

                <ext:GridPanel ID="GridPanel1" runat="server" StoreID="Store1" Title="Tab B">
                    <ColumnModel ID="ColumnModel1" runat="server">
                        <Columns>
                            <ext:Column ID="Column1" runat="server" Text="Att1" DataIndex="Att1" Width="100" />
                            <ext:Column ID="Column2" runat="server" Text="Att2" DataIndex="Att2" Width="100" />
                            <ext:Column ID="Column3" runat="server" Text="Att3" DataIndex="Att3" />
                        </Columns>
                    </ColumnModel>
                    <Features>
                        <ext:Grouping ID="Grouping1" runat="server" />
                        <ext:GridFilters ID="GridFilters1" runat="server" MenuFilterText="Filtros">
                            <Filters>
                                <ext:StringFilter DataIndex="Att1" />
                                <ext:StringFilter DataIndex="Att2" />
                                <ext:NumericFilter DataIndex="Att3" />
                            </Filters>
                        </ext:GridFilters>
                    </Features>
                </ext:GridPanel>
            </Items>
        </ext:TabPanel>
    </form>
</body>
</html>