unbalanced left paranthesis

Hi.

I have got a problem trying to use EA calles "usualexpert.mq4" taken from S. Kovalyov book available on mql4.com website. I copied all fuctions and #include files from the book, made an attempt to compile the following code (which is almost the same as "usualexpert.mq4" EA):

#include <stdlib.mqh>
#include <stderror.mqh>
#include <WinUser32.mqh>
//----------------------------------------------------------------------------------- 3 --
#include <Variables.mqh>   // Description of variables 
#include <Terminal.mqh>    // Order accounting
#include <Events.mqh>      // Event tracking function
#include <Inform.mqh>      // Data function
#include <Trade.mqh>       // Trade function
#include <Open_Ord.mqh>    // Opening one order of the preset type
#include <Close_All.mqh>   // Closing all orders of the preset type
#include <Tral_Stop.mqh>   // StopLoss modification for all orders of the preset type
#include <Lot.mqh>         // Calculation of the amount of lots
#include <Criterion.mqh>   // Trading criteria
#include <Errors.mqh>      // Error processing function
//----------------------------------------------------------------------------------- 4 --
int init()                             // Special function 'init'  
   {   
   Level_old=MarketInfo(Symbol(),MODE_STOPLEVEL );//Min. distance   
   Terminal();                         // Order accounting function    
   return;                             // Exit init()   
   }
//----------------------------------------------------------------------------------- 5 --
int start()                            // Special function 'start'  
   {  
   Terminal();                         // Order accounting function    
   Events();                           // Information about events   
   Trade(Criterion());                 // Trade function   
   Inform(0);                          // To change the color of objects   
   return;                             // Exit start()  
   }
//----------------------------------------------------------------------------------- 6 --
int deinit()                           // Special function deinit()  
   {   
   Inform(-1);                         // To delete objects   
   return;                             // Exit deinit()  
   }
//----------------------------------------------------------------------------------- 7 --

and got following message: "\'end_of_program' - unbalanced left paranthesis". I studied the code many times and haven't found any mistakes with the paranthesis. What can be wrong? Is it something with the complier??