Error 130 - common I know, but problematic none the less.

Hello Everyone.
I am having a problem with Error #130 (I have looked through the documentation and have not found anything that can help me so far). I have attached the code below - aside from the other issues in the code, I am just focusing on this for the moment.
For some reason, if I change the OP_BUY & OP_SELL to OP_BUYSTOP & OP_SELLLIMIT they work, as OP_BUY & OP_SELL they do not. I have tried rearranging the code, and still have the same problem. 

I demo trade with GFT, who are a Market Maker, and not an ECN, hence are 5 digits, I don't think this is the problem, as it works when I make them pending orders rather than immediate orders. Any ideas? (Also, I am a rookie, constructive feedback helps me learn best)

Thanks 

// External Variables
extern double StopLoss = 0.00300;
extern double TakeProfit = 0.00400;
extern double LotSize = 1;
extern int MagicNumber = 123;

// Global Variables
int SellLimit;
int BuyStop;
int BuyLimit;
int SellStop;

// Start Function
int start()
        {            
                     RefreshRates();
                double DayHigh = iHigh(NULL, PERIOD_D1, 1);  // Yesterday's High
                double DayLow = iLow(NULL, PERIOD_D1, 1);  // Yesterday's Low
                double Spread = Ask - Bid;
                double Price = Bid;
                double Price1 = Ask;
                  
                
                
                RefreshRates();                 
                // Calculate SL & TP For Sell Limit
                double SellLimitSL = Price + StopLoss;
                                    double SellLimitTP = Price - TakeProfit;
                                    
                                    RefreshRates();
                                    // Calculate SL & TP For Buy Stop                           
                                    double BuyStopSL = Price1 - StopLoss;
                                    double BuyStopTP = Price1 + TakeProfit;
                                    
                // Previous Day High // 
                if(Price > DayHigh && SellLimit == 0 && BuyStop == 0)
         {               
                 RefreshRates(); 
                                // Open Sell Limit
                                SellLimit = OrderSend(Symbol(),OP_SELLLIMIT,LotSize,Price,5,SellLimitSL,SellLimitTP,"SellLimit Order",MagicNumber,0,Green);
    
                  if(SellLimit < 0 )  //  OrderSend has failed and has returned a value of  -1
                  {
                  Print("Order Send failed, error # ", GetLastError() );
                  }
       
                        // Open Buy Stop
                                BuyStop = OrderSend(Symbol(),OP_BUYSTOP,LotSize,Price1,5,BuyStopSL,BuyStopTP,"BuyStop Order",MagicNumber,0,Green);
         
                 if(BuyStop < 0 )  //  OrderSend has failed and has returned a value of  -1
                  {
                  Print("Order Send failed, error # ", GetLastError() );
                  }
         
         }                                  
                               
                               
                               RefreshRates();
                                    // Calculate SL & TP For Buy Limit                  
                                    double BuyLimitSL = Price1 - StopLoss;
                                    double BuyLimitTP = Price1 + TakeProfit;
                                    
                                    RefreshRates();
                     // Calculate SL & TP For Sell Stop                 
                                    double SellStopSL = Price + StopLoss;
                                    double SellStopTP = Price - TakeProfit;    
                                                  
        // Previous Day Low //
                if(Price < DayLow && SellStop == 0 && BuyLimit == 0)
         {
         RefreshRates(); 
                    // Open Buy Limit
                                BuyLimit = OrderSend(Symbol(),OP_BUY,LotSize,Price1,5,BuyLimitSL,BuyLimitTP,"BuyLimit Order",MagicNumber,0,Green);

                 if(BuyLimit < 0 )  //  OrderSend has failed and has returned a value of  -1
                  {
                  Print("Order Send failed, error # ", GetLastError() );
                  }
         
                                // Open Sell Stop
                                SellStop = OrderSend(Symbol(),OP_SELL,LotSize,Price,5,SellStopSL,SellStopTP,"SellStop Order",MagicNumber,0,Green);
                
                 if(SellStop < 0 )  //  OrderSend has failed and has returned a value of  -1
                  {
                  Print("Order Send failed, error # ", GetLastError() );
                  } 
         }    
                            
         
         string Yesterday = TimeToStr(iTime(Symbol(),PERIOD_M1,1),TIME_DATE);
                        string Today = TimeToStr(iTime(Symbol(),PERIOD_M1,0),TIME_DATE);
                                                    
                //Rest For New Trading Day//    
                if(Yesterday < Today)
                    {
                    SellLimit = 0;
                    BuyStop = 0;
                    BuyLimit = 0;
                    SellStop = 0;
                    } 
                    
         string DH1 = DoubleToStr(DayHigh,5);
                   string DL1 = DoubleToStr(DayLow,5);
           string BD1 = DoubleToStr(Bid,5);
                   string AK1 = DoubleToStr(Ask,5);
                        string SPRD = DoubleToStr(Spread,5);
                   string SL = DoubleToStr(SellLimit,2);
                   string BS = DoubleToStr(BuyStop,2);
                        string BL = DoubleToStr(BuyLimit,2);
                        string SS = DoubleToStr(SellStop,2);
                                    
                   Comment("Previous Day High: " + DH1+"\nPrevious Day Low: " + DL1+"\nCurrent Bid Price: " + BD1+"\nCurrent Ask Price: " + AK1+"\nCurrent Spread: " 
                     + SPRD+"\nSellLimit: " + SL+"\nBuyStop: " + BS+"\nBuyLimit: " + BL+"\nSellStop: " + SS+"\nYesterdays Date: " + Yesterday+"\nTodays Date: " + Today);
                                                
                return(0);
        }