Hi All,

We are facing the below expection now and then, this happens when we invoke the courier service for promoting a page. It gets resolved after app pool recycle, can you please let us know the root cause for this error? 

The database is a shared one , is it the cause? 

Any help would be much appreciated 

• Umbraco Version - 7
• asp.net version - 4
• Windows and iis version - Windows 2008 IIS 7.5
• Stacktrace - posted below
• A detailed description of what you did before the issue happened - posted above

 Umbraco.Courier.Core.Exceptions.RetrieveException: Error retrieving item [xxxx] from provider [xxxxx]. ---> System.ObjectDisposedException: Session is closed!
Object name: 'ISession'.
   at NHibernate.Impl.AbstractSessionImpl.ErrorIfClosed()
   at NHibernate.Impl.AbstractSessionImpl.CheckAndUpdateSessionStatus()
   at NHibernate.Impl.AbstractSessionImpl.CreateQuery(IQueryExpression queryExpression)
   at NHibernate.Linq.NhQueryProvider.PrepareQuery(Expression expression, IQuery& query, NhLinqExpression& nhQuery)
   at NHibernate.Linq.NhQueryProvider.Execute[TResult](Expression expression)
   at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source)
   
   --- End of inner exception stack trace ---