CTrader 5.0.40 indicators stops working

Hi Support

Latest release has some issues as Initialize() method does not get called and indicator does not show up.

I have print test added to Initialize method but test never got printed and motherBar method never get called.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using cAlgo.API;
using cAlgo.API.Collections;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;

namespace cAlgo
{
   [Indicator(IsOverlay = true, AccessRights = AccessRights.None)]
   public class MLS_MOTHER_BAR : Indicator
   {
       [Parameter("Show Previous Candles", DefaultValue = 500)]
       public int p_prevBars { get; set; }

       long barIndex = 0;

       protected override void Initialize()
       {
          Print("test");
           MotherBar();
       }