Linq in monotouch (debugging on device)

Question

I am trying to run a Windows Azure Mobile Services query (using xamarins monotouch fork of the SDK).

This code runs fine on the Simulator but it blows up on the device:

this.table.Where (a => a.Sequence == sequence).Where (a => a.Week == week).ToListAsync()
                .ContinueWith (t =>
            {
                this.items = t.Result;
                this.tableView.ReloadData ();
                IsUpdating = false;
            }, scheduler);

The error I get is:

Exception has been thrown by the target of an invocation. ---> System.Exception: Attempting to JIT compile method 'System.Linq.jvm.Runner:GetDelegate ()' while running with --aot-only.

The only thing I´ve managed to do to make it work is removing the where conditions. This works just fine except I (obviously) dont get the results filtered as needed.

How should I rewrite my code to make it work on an actual iOS device?

UPDATE: table is a class variable of type *IMobileServiceTable < Activity > *

week and sequence are both of type int.

Activity is a POCO class.

    public class Activity
{
        public int ID {
            get;
            set;
        }
        public string Name {
            get;
            set;
        }

        public int CaloricRequirementMin {
            get;
            set;
        }

        public int CaloricRequirementMax {
            get;
            set;
        }

        public string Difficulty {
            get;
            set;
        }

        public int PlanId {get;set;}

        public string Type {
            get;
            set;
        }

        public int Sequence {
            get;
            set;
        }
        public int Week {
            get;
            set;
        }

        public int SubscriptionActivityId {
            get;
            set;
        }
}

I have double checked to make sure that these are both populated.

It words flawlessly on simulator.

Answer 1

In the end I had to modify my code to use ReadAsync with a string query instead of the linq expressions.

this.table.ReadAsync(query)
                .ContinueWith (t =>
            {
                    items = (from item in t.Result.GetArray()
                             let act = item.GetObject()
                    select new Activity{
                        ID= Convert.ToInt32(act.GetNamedNumber("id")),
                        Name= act.GetNamedString("Name"),
                        SubscriptionActivityId = act.ContainsKey("SubscriptionActivityId") ? Convert.ToInt32(act.GetNamedNumber("SubscriptionActivityId")) : 0
                    }).ToList();


                    this.tableView.ReloadData ();
                IsUpdating = false;
            }, scheduler);