Need an ASP guru to fix resource

I need some assitance from a ASP guru out there..... I had a working resource in 9.5x that showed me current down devices and time it went down and duration. It worked very well but in version 10.x when I click on the edit button I get an error and need to see what needs to be tweaked.

The working resource looks like this:

But when I hit the Edit button I see this error:

I also see the error on a custom page which lists nodes by their name suffices. It seems that the code for the edit function changed and I am not sure how to get around it.

The code for the resource I am using is:

<%@ Control Language="C#" ClassName="Outages" Inherits="SolarWinds.Orion.Web.UI.BaseResourceControl" %>
<%@ Import Namespace="System.Data.SqlClient"%>
<%@ Import Namespace="SolarWinds.Orion.Common"%>
<%@ Import Namespace="SolarWinds.Orion.Web.DAL"%>
<%@ Import Namespace="System.Data"%>
<%@ Register TagPrefix="orion" Namespace="SolarWinds.Orion.Web.Controls" %>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        string filter = this.Resource.Properties["Filter"];

        DataTable table;

        try
        {
            string sql = @"
SELECT Nodes.NodeID, Nodes.Caption, Nodes.StatusDescription, Nodes.GroupStatus, Nodes.StatusLED,
Nodes.IP_Address, Nodes.DNS, Nodes.SysName, Nodes.status_info, WebCommunityStrings.GUID,
MAX(E.EventTime) AS DownTime,
Cast(DateDiff(day,MAX(E.EventTime),getdate()) as varchar) + ' Day(s) ' + convert(char(8),dateadd(second,DateDiff(second,MAX(E.EventTime),getdate()),0),14) as Duration, Nodes.Department
FROM Nodes
INNER JOIN Events E ON E.NetworkNode = Nodes.NodeID
LEFT OUTER JOIN WebCommunityStrings ON WebCommunityStrings.CommunityString = Nodes.Community
WHERE Nodes.status = 2 {0}
GROUP BY Nodes.StatusLED, Nodes.Caption, Nodes.Department, Nodes.NodeID, Nodes.StatusDescription, Nodes.GroupStatus, Nodes.IP_Address, Nodes.DNS, Nodes.SysName, Nodes.status_info, WebCommunityStrings.GUID
ORDER BY Nodes.Caption
";
            if (!String.IsNullOrEmpty(filter))
                sql = string.Format(sql, "AND " + filter.Replace('*', '%').Replace('?', '_'));
            else
                sql = string.Format(sql, "");
   
            using (SqlCommand cmd = SqlHelper.GetTextCommand(Limitation.LimitSQL(sql)))
            {
                table = SqlHelper.ExecuteDataTable(cmd);
            }
        }
        catch (SqlException)
        {
            this.SQLErrorPanel.Visible = true;
            return;
        }

        this.downNodesTable.DataSource = table;
        this.downNodesTable.DataBind();
    }

    protected override string DefaultTitle
    {
        get { return "Current Down Devices and Status"; }
    }

    public override string HelpLinkFragment
    {
        get { return "OrionPHResourceDownNodes"; }
    }

    public override string EditURL
    {
        get
        {
            string url = String.Format("/Orion/NetPerfMon/Resources/FilterEdit.aspx?ResourceID={0}&ViewID={1}&HideInterfaceFilter=True",
                this.Resource.ID, this.Resource.View.ViewID);
            if (!String.IsNullOrEmpty(this.Request.QueryString["NetObject"]))
            {
                url += "&NetObject=" + this.Request.QueryString["NetObject"];
            }

            return url;
        }
    }

    public override string SubTitle
    {
        get
        {
            string subTitle = base.SubTitle;
            if (String.IsNullOrEmpty(subTitle))
            {
                return "The Following Nodes are not Responding";
            }
            return subTitle;
        }
    }
</script>

<orion:resourceWrapper runat="server" ID="wrapper">
    <Content>
        <asp:Panel ID="SQLErrorPanel" runat="server" Visible="false">
            <table cellpadding="10px">
                <tr>
                    <td style="font-weight: bold; font-size: small; color: Red">
                        Custom SQL filter is incorrectly formated.
                    </td>
                </tr>
            </table>
        </asp:Panel>
        <asp:Repeater runat="server" ID="downNodesTable">
            <HeaderTemplate>
                <table border="0" cellpadding="2" cellspacing="0" width="100%">
                    <tr>
                        <th class="ReportHeader" colspan="2">DEVICE</th>
                        <th class="ReportHeader">LAST CHANGE</th>
                        <th class="ReportHeader">DURATION</th>
                        <th class="ReportHeader">DEPARTMENT</th>
                        <th class="ReportHeader">COMMENTS</th>
                    </tr>
            </HeaderTemplate>
            <ItemTemplate>
                <tr>
              <td class="Property" valign="middle" width="20">
                  <img alt="Status" src='/Orion/images/StatusIcons/Small-<%# Eval("StatusLED").ToString().Trim() %>' /> 
              </td>
              <td class="Property">
                  <orion:ToolsetLink ID="ToolsetLink1" runat="server" IPAddress='<%# Eval("IP_Address") %>' DNS='<%# Eval("DNS") %>' SysName='<%# Eval("SysName") %>' CommunityGUID='<%# Eval("GUID") %>' NodeID='<%# Eval("NodeID") %>' ToolTip='<%# Eval("StatusDescription") %>'>
                      <%# Eval("Caption") %>
                  </orion:ToolsetLink>
              </td>
              <td class="Property"><%# Eval("Downtime") %></td>
              <td class="Property"><%# Eval("Duration") %></td>
              <td class="Property"><%# Eval("Department") %></td>
              <td class="Property"><%# Eval("Status_Info") %></td>
          </tr>
            </ItemTemplate>
            <FooterTemplate>
                </table>
            </FooterTemplate>
        </asp:Repeater>
    </Content>
</orion:resourceWrapper>