System.NullReferenceException: Object reference not set to an instance of an object.
at System.Data.Linq.SqlClient.QueryConverter.VisitInvocation(InvocationExpression invoke)
at System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.Visit(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp)
at System.Data.Linq.SqlClient.QueryConverter.VisitBinary(BinaryExpression b)
at System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.Visit(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp)
at System.Data.Linq.SqlClient.QueryConverter.VisitBinary(BinaryExpression b)
at System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.Visit(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp)
at System.Data.Linq.SqlClient.QueryConverter.VisitWhere(Expression sequence, LambdaExpression predicate)
at System.Data.Linq.SqlClient.QueryConverter.VisitSequenceOperatorCall(MethodCallExpression mc)
at System.Data.Linq.SqlClient.QueryConverter.VisitMethodCall(MethodCallExpression mc)
at System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node)
at System.Data.Linq.SqlClient.QueryConverter.ConvertOuter(Expression node)
at System.Data.Linq.SqlClient.SqlProvider.BuildQuery(Expression query, SqlNodeAnnotations annotations)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.DataQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at WRDev.RW3.Controls.Menu.Rewrite3Menu.GenerateMenuControl(HtmlGenericControl aUL, String[] roles, Boolean isAdministrative)