[HELP!!]Info Drop system crash

I have a problem in info drop my worldserver.exe Crash and when i debug this code check the code with
------->THIS LINE ----> that line make my world server crash

for( vector<t_info>::const_iterator it = CInfoDrop::GetInstance()->GetInfoDrop().begin(); it != CInfoDrop::GetInstance()->GetInfoDrop().end(); ++it )
{
------->THIS LINE ----> if( dwID == it->dwID )
{
t_info tmp;

memset( &tmp, 0, sizeof( tmp ) );
tmp.dwID = it->dwID;
tmp.dwIndex = it->dwIndex;
tmp.dwProbability = it->dwProbability;
info.push_back( tmp );
nSize++;
}
}

Check the Item Drop if its available on your server, also check the monster drop if its too much drops

i all ready Fixed by my own thans for the help and effort