I have just started using the image cropper for the first time and I get the following error message:

'umbraco.MacroEngines.DynamicXml' does not contain a definition for 'url'

Any ideas what could cause this? I'm using Umbraco v6.1.2 (Assembly version: 1.0.4927.23554)

 This is my Razor Swhich works fine if I use @item.Image instead of @crop.url but then it displays the original image.

Razor Script

@inherits umbraco.MacroEngines.DynamicNodeContext
 
@*
Show Cropped Images
*@
               
@{var productNode = @Model.NodeById(1117);}
 
    @foreach (var item in
productNode.Children.Take(5))
   
{          
                               
if (item.HasValue("imageCropper")) {
                                               
var crop = item.imageCropper.Find("@name", "HomeCrop");
                                               
                                               
if(crop!=null){
                                                               
<li><a href="@item.Url" alt="@crop.url"><img
src="@crop.url"
class="img-responsive"></a></li>
                                               
}
                               
}
               
}