Hi. My Umbraco AppPool is crashing every few hours and I believe I've traced it to a razor script I have, below:

var gallery = Model.AncestorOrSelf("gallery");
                if (gallery == null) 
                { 
                    if (Model.articleGalleryChooser != null && Model.articleGalleryChooser.GetType() == typeof(Int32))
                    {
                        gallery = Library.NodeById(Model.articleGalleryChooser);
                    }
                    else
                    {
                        gallery = Model; 
                    }
                }
                var galleryImages = gallery.Descendants("galleryImage").OrderBy("createDate desc");
                var galleryImageCount = galleryImages.Count();

                short maxImageHeight = 409;
                short maxImageWidth = 554;

                var index = 0;
                var i = 0;
                var description = "";

                int.TryParse(Request.QueryString["index"], out index);

After this I proceed to look through the galleryImages collection:

@foreach (var galleryImage in galleryImages) { }

I thought that's all pretty straight forward but looking at a stack trace I noticed:

System.Lazy`1[[System.__Canon, mscorlib]].CreateValue()
System.Lazy`1[[System.__Canon, mscorlib]].LazyInitValue()
umbraco.MacroEngines.DynamicBackingItem.get_ChildrenAsList()
umbraco.MacroEngines.DynamicNode.<Descendants>b__3a(umbraco.MacroEngines.DynamicBackingItem)
umbraco.MacroEngines.ExtensionMethods.Map[[System.__Canon, mscorlib]](System.Collections.Generic.IEnumerable`1<System.__Canon>, System.Func`2<System.__Canon,Boolean>, System.Func`2<System.__Canon,System.Collections.Generic.IEnumerable`1<System.__Canon>>)
umbraco.MacroEngines.ExtensionMethods.Map[[System.__Canon, mscorlib]](System.Collections.Generic.IEnumerable`1<System.__Canon>, System.Func`2<System.__Canon,Boolean>, System.Func`2<System.__Canon,System.Collections.Generic.IEnumerable`1<System.__Canon>>)