Compiling problems

[Forex Trader]

Experiencing erratic problems with compiling, compile and indicator works, comment out one line of code and program hangs up PC. MT4 Build 202 (27 Feb 2007).

if(iEmptyLocalHistory > 0)
  {
    Alert(iEmptyLocalHistory, " charts not opened - Abandon ... u try again later!");
    //return(-1);
  }