When using Glass.Mapper 4.4.0.199 or latest 4.4.1.331-beta along with sitecore 8.2 update 5, Glass.Mapper.Sc.SitecoreService.Create fails with these exception messages. Below is full stack trace. Please advice. 1.Failed to find configuration for parent item type Sitecore.Data.Items.Item at base.GlassContext.GetTypeConfiguration(parent, false, true) 2.The type Sitecore.Collections.ChildList does not contain any generic arguments Sitecore Config: https://www.dropbox.com/s/xi8xy587k7krao2/ew%20norm.showconfig.xml?dl=0 >15016 19:03:10 ERROR EW Exception on ItemService.Create. Path: /sitecore/content/EmpowerWomen/Home/Resources/Documents/2017/12, Name: testtest, Language: en. Exception: Glass.Mapper.MapperException Message: Failed to find configuration for parent item type Sitecore.Data.Items.Item Source: Glass.Mapper.Sc at Glass.Mapper.Sc.SitecoreService.Create[T,TK](TK parent, String newName, Language language, Boolean updateStatistics, Boolean silent) at UNWomen.SC.EW.Core.Services.ItemService.Create[T](String path, String name, Language language, Boolean useYearMonthFolders, Boolean checkDuplicatedName) in C:\Source\Repos\UNWSitecore\UNWomen.SC.EW.Core\Services\ItemService.cs:line 43 >Nested Exception >Exception: Glass.Mapper.MapperException Message: The type Sitecore.Collections.ChildList does not contain any generic arguments Source: Glass.Mapper at Glass.Mapper.Utilities.GetGenericArgument(Type type) at Glass.Mapper.Sc.DataMappers.SitecoreChildrenMapper.Setup(DataMapperResolverArgs args) at Glass.Mapper.Pipelines.DataMapperResolver.Tasks.DataMapperStandardResolverTask.Execute(DataMapperResolverArgs args) at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass8.<.ctor>b__1(T args) at Glass.Mapper.Pipelines.AbstractPipelineTask1.Next(T args) at Glass.Mapper.Pipelines.AbstractPipelineRunner2.Run(T args) at Glass.Mapper.Context.ProcessProperties(IEnumerable1 properties) at Glass.Mapper.Context.Load(IConfigurationLoader[] loaders) at Glass.Mapper.Context.GetTypeConfigurationFromType[T](Type type, Boolean doNotLoad, Boolean checkBase) at Glass.Mapper.Sc.SitecoreService.Create[T,TK](TK parent, String newName, Language language, Boolean updateStatistics, Boolean silent)