I've tried following the code snippet here https://gist.github.com/1170848 but can't seem to get it working.

My xml is like this:

<FancyDressProduct id="1819" parentID="1742" level="5" writerID="0" creatorID="0" nodeType="1240" template="1057" sortOrder="1" createDate="2012-02-23T15:48:35" updateDate="2012-03-02T08:33:25" nodeName="Santa" urlName="santa" writerName="Ian Houghton" creatorName="Ian Houghton" path="-1,1073,1153,1178,1742,1819" isDoc="">
            <productTitle>Santa</productTitle>
            <crops>
              <crops date="02/03/2012 08:33:16">
                <crop name="fancyDress" x="0" y="0" x2="400" y2="600" url="/media/21002/278_fancyDress.jpg" />
              </crops>
            </crops>
            <productDetails><![CDATA[
<p><span>Large; Cotton santa jacket with white fur trim and
trousers. Boot covers, wig 'n' beard, hat and gloves all
included.</span></p>
]]></productDetails>
            <productCode>C-01</productCode>
            <reservePrice>25</reservePrice>
            <deposit>25</deposit>
            <productSize>Large</productSize>
            <featuredProduct>0</featuredProduct>
            <umbracoFile>/media/21002/278.jpg</umbracoFile>
            <metaTitle><![CDATA[]]></metaTitle>
            <metaDescription><![CDATA[]]></metaDescription>
            <metaKeywords><![CDATA[]]></metaKeywords>
            <umbracoUrlName />
            <umbracoUrlAlias />
            <umbracoRedirect />
            <umbracoNaviHide>0</umbracoNaviHide>
          </FancyDressProduct>

and my razor code is:

@inherits umbraco.MacroEngines.DynamicNodeContext
@{
  var pagesToList = @Model.Children;

  // configuration
  var itemsPerPage = String.IsNullOrEmpty(Parameter.ItemsPerPage) ? 3 : int.Parse(Parameter.ItemsPerPage);
  var previousLabel = String.IsNullOrEmpty(Parameter.PreviousLabel) ? "Previous" : Parameter.PreviousLabel;
  var nextLabel = String.IsNullOrEmpty(Parameter.NextLabel) ? "Next" : Parameter.NextLabel;

  // paging calculations
  var numberOfItems = pagesToList.Count();
  int currentPage = 1;
  if (!int.TryParse(HttpContext.Current.Request.QueryString["Page"], out currentPage)) {
    currentPage = 1;
  }
  currentPage--;
  var numberOfPages = numberOfItems % itemsPerPage == 0 ? Math.Ceiling((decimal)(numberOfItems / itemsPerPage)) : Math.Ceiling((decimal)(numberOfItems / itemsPerPage))+1; 

  <p>
    Total Items: @numberOfItems <br />
    Items per Page: @itemsPerPage<br />
    Pages: @numberOfPages;<br />
    Current Page: @(currentPage)
  </p>

  // Products List
  <ul class="productsLandscape">
    @foreach(var item in pagesToList.Skip(currentPage*itemsPerPage).Take(itemsPerPage))
    {
      <li>
       <a id="fancyDress" href="@item.umbracoFile">
           <img src="@item.crops.Find("@name","fancyDress").url" alt="" /> 
       </a>
       <div class="fancyDressDetails left">
          <h3>@item.Name</h3>
          <p>@item.productDetails</p>
          <br/>
          <br/>
          <p>Reserve price: <b>£@item.reservePrice</b> (+ £20.00 deposit)</p>
          <p>Product code: <b>@item.productCode</b> (please quote in correspondence)</p>
          <p>Size: <b>@item.productSize</b></p>
          <input type="button" text="Reserve Item" />
      </div>
      <div class="clear"></div>
      <div class="divider"></div>
    </li>
    }
  </ul>

  <p class="pagingPages">
    @{
  // Google style paging links
    if (currentPage > 0) {
      <a href="?page=@(currentPage)">&laquo; @previousLabel</a>
    } else {
      <span class="pagingDisabled">&laquo; @previousLabel</span>
    }

    var Pages = Enumerable.Range(1, (int)numberOfPages);
    foreach(var number in Pages) {
      if (number-1 != currentPage) {
      <a href="?page=@number">@number</a>
      } else {
      @number
      }
      @Html.Raw("&nbsp&nbsp");
    }

    if (currentPage < Pages.Count()-1) {
      <a href="?page=@(currentPage+2)">@nextLabel &raquo;</a>
    } else {
      <span class="pagingDisabled">@nextLabel &raquo;</span>
    }
  }
  </p>
}

but I'm getting this error:

Error loading Razor Script FancyDressListing.cshtml
'string' does not contain a definition for 'Find'