Also , this isn't fixed when i recycle the appPool for the site.
it's also user specific and not site wide. if i open the site with another browser it's fine.
But it's also persistent when i clear the cookies.
Server : IIS 8 Windows server 2012
SQL : 2012 express
Server Error in '/' Application.
An entity object cannot be referenced by multiple instances of IEntityChangeTracker.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: An entity object cannot be referenced by multiple instances of IEntityChangeTracker.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[InvalidOperationException: An entity object cannot be referenced by multiple instances of IEntityChangeTracker.]
System.Data.Objects.ObjectContext.VerifyContextForAddOrAttach(IEntityWrapper wrappedEntity) +2857232
System.Data.Objects.ObjectContext.AddSingleObject(EntitySet entitySet, IEntityWrapper wrappedEntity, String argumentName) +67
System.Data.Objects.DataClasses.RelatedEnd.AddEntityToObjectStateManager(IEntityWrapper wrappedEntity, Boolean doAttach) +44
System.Data.Objects.DataClasses.RelatedEnd.AddGraphToObjectStateManager(IEntityWrapper wrappedEntity, Boolean relationshipAlreadyExists, Boolean addRelationshipAsUnchanged, Boolean doAttach) +26
System.Data.Objects.DataClasses.RelatedEnd.IncludeEntity(IEntityWrapper wrappedEntity, Boolean addRelationshipAsUnchanged, Boolean doAttach) +399
System.Data.Objects.DataClasses.EntityCollection`1.Include(Boolean addRelationshipAsUnchanged, Boolean doAttach) +263
System.Data.Objects.DataClasses.RelationshipManager.AddRelatedEntitiesToObjectStateManager(Boolean doAttach) +173
System.Data.Objects.ObjectContext.AddObject(String entitySetName, Object entity) +463
System.Data.Entity.Internal.Linq.<>c__DisplayClass5.<Add>b__4() +58
System.Data.Entity.Internal.Linq.InternalSet`1.ActOnSet(Action action, EntityState newState, Object entity, String methodName) +193
System.Data.Entity.Internal.Linq.InternalSet`1.Add(Object entity) +108
System.Data.Entity.DbSet`1.Add(TEntity entity) +42
Nop.Data.EfRepository`1.Insert(T entity) +87
Nop.Services.Customers.CustomerService.InsertGuestCustomer() +207
Nop.Web.Framework.WebWorkContext.get_CurrentCustomer() +597
Nop.Web.MvcApplication.SetWorkingCulture() +288
Nop.Web.MvcApplication.Application_AuthenticateRequest(Object sender, EventArgs e) +5
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18045