I've looked around and found this post and it hasn't helped a bit but cannot figure out why my ItemCommand isn't fired. I've got a pretty simple webpart as you can see below, on page load it displays a textbox and button. The user enters text and clicks the button and a search is performed. If there are results in the repeater, the ItemTemplate has a <asp:LinkButton> in it that should allow them to click it and fire the ItemCommand event. Lookup works great as usual, just not sure on the Repeater Events. Any ideas?

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="SigSubs.ascx.cs" Inherits="CMSWebParts_MyWebParts_SigSubs" %>
<asp:Panel ID="pnlLookup" runat="server" DefaultButton="btnLookup">
    <cms:LocalizedLabel ID="lblEmailOrCell" runat="server" />
    <asp:TextBox ID="txtEmailOrCell" runat="server" /><br />
    <cms:CMSButton ID="btnLookup" runat="server" CssClass="input-button" OnClick="btnLookup_Click" />
</asp:Panel>
<asp:Panel ID="pnlMessage" runat="server">
    <cms:LocalizedLabel ID="lblMessage" runat="server" CssClass="errorLg" />
</asp:Panel>
<cms:CMSRepeater ID="rptItems" runat="server" OnItemCommand="rptItems_ItemCommand" />

    public override void OnContentLoaded()
    {
        base.OnContentLoaded();
        SetupControl();
    }

    /// <summary>
    /// Initializes the control properties
    /// </summary>
    protected void SetupControl()
    {
        if (this.StopProcessing)
        {
            // Do nothing
        }
        else
        {
            lblMessage.Text = "";
            // design properties
            lblEmailOrCell.Text = LabelText;
            btnLookup.Text = ButtonText;

            // repeater properties
            rptItems.AlternatingTransformationName = AlternatingTransformationName;
            rptItems.TransformationName = TransformationName;
            rptItems.HeaderTemplate = CMSDataProperties.LoadTransformation(this, HeaderTransformationName, true);
            rptItems.FooterTemplate = CMSDataProperties.LoadTransformation(this, FooterTransformationName, true);
            rptItems.SeparatorTemplate = CMSDataProperties.LoadTransformation(this, SeparatorTransformationName, true);
            if (!String.IsNullOrEmpty(ZeroRowsText))
            {
                rptItems.ZeroRowsText = ZeroRowsText;
            }
            rptItems.HideControlForZeroRows = HideControlForZeroRows;

            if (!RequestHelper.IsPostBack())
            {
                rptItems.ZeroRowsText = "";
            }
        }
    }

    /// <summary>
    /// Reloads data
    /// </summary>
    public override void ReloadData()
    {
        base.ReloadData();
    }

    #endregion

    #region "Events"
    protected void btnLookup_Click(object sender, EventArgs e)
    {
        DoLookUp();
    }

    protected void rptItems_ItemCommand(object source, System.Web.UI.WebControls.RepeaterCommandEventArgs e)
    {
        // do some work here
        // then databind
        DoLookUp();
    }

    #endregion

    #region "Private methods"
    private void DoLookUp()
    {
        // do some work here
        rptItems.DataSource = ds;
        rptItems.DataBind();
    }