Returning Null

gistfile1.cs

public class RetailersService : AppServiceBase
{
    public async Task<IList<Retailer>> GetRetailersAsync()
    {
        return await BlobCache.LocalMachine.GetOrFetchObject("retailers", DownloadRetailersAsync);
    }

    private Task<IList<Retailer>> DownloadRetailersAsync()
    {
        IList<Retailer> retailers = Enumerable.Range(0, 20)
            .Select(i => new Retailer { Id = i, Name = String.Format("Retailer {0}", i) })
            .ToList();

        return Task.FromResult(retailers);
    }
}

On WinRT? See reactiveui/Akavache#21 as I hit the same issue on the weekend...