Official ZigZag indicator not loaded. why?

[Samuel Oyeniyi]

 The indicator ZigZag is in my roaming directory but I still get error 4802!!! I am logged on as administrator!

 

C:\Users\samoye\AppData\Roaming\MetaQuotes\Terminal\D0E8209F77C8CF37AD8BF550E51FF075\MQL5\Indicators\ZigZag.ex5

2015.05.09 10:52:36.130 searchzigzag (GBPUSD,D1) cannot load custom indicator 'ZigZag' [4802]

 I cannot see a definite resolution of error 4802 in the posts!!

Please help. 

//+------------------------------------------------------------------+
//|                                                 searchzigzag.mq5 |
//|                        Copyright 2015, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2015, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property script_show_inputs
//--- input parameters
input int      a=12;
input int      b=5;
input int      c=3;
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
 for(int i=1; i<=76; i++){

   if(iCustom(NULL,PERIOD_CURRENT,"ZigZag",a,b,c,0,i)!=0) {
         PrintFormat(i+","+PERIOD_H4+","+","+PERIOD_CURRENT+","+","+iCustom(NULL,PERIOD_CURRENT,"ZigZag",a,b,c,0,i));
     }
     }    
  }
//+------------------------------------------------------------------+

[Alain Verleyen]

Please check the documentation of iCustom(). With mql5 it returns an handle and only need the indicator parameters.