New Install - Trouble Reading csv files

Recently changed machines and did a fresh install of amibroker. Copied all my system files to the new maching. Everything seems to be working fine other than the few backtests i have where i read the signals from a csv file. I thought last time i changed machines there was an issue with this but it has been years since i did this.

So i have a signal file with Symbol, Trade (buy or sell), Date (m/dd/yyyy) columns. the code below opens the file and reads the signals. It runs in about 10 seconds on my old machine. This new one (Windows 11).... it does run... i am at a lost and would appreciate any ideas on what i may be missing (a DLL or somethign)...

typeSignalFile = "//{1B9V7A2I}//Formulas//NDU//ABO//~AEQDIVI//Signals//aflSignal~AEQDIVI.csv";


// NEWLY ADDED STOCKS FILTER////////////////////////////////////////////////////
FILTER2018DATE = Year()<2018;
FILTER2018SYM = Name()=="BF.B" OR Name()=="SPGI" OR Name()=="CB";
FILTER2018 = FILTER2018DATE AND FILTER2018SYM;
FILTERADDS = FILTER2018; // OR FILTER2019 ETC+



//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------


SetOption("ExtraColumnsLocation", 1 );
TotalPositions = 10;//Param("Positions",5,1,10);
PosSize = 10;
RoundLotSize = 0;
SetOption("UsePrevBarEquityForPosSizing", True);
SetOption("InitialEquity",100000);
SetOption("MinShares", 1);
SetOption("AllowPositionShrinking",True);
SetOption("AccountMargin",100);
SetOption("MaxOpenPositions", Totalpositions );
SetOption("MaxOpenLong",10);


TradeDay = DayThirdFriday;
TradeDay2 = DayThirdFriday2;
TradeMonth = m==3 OR m==6 OR m==9 OR m==12;
TradeDay=TradeDay2;// div champ IIf(Year()<=2018,TradeDay,TradeDay2);
Rebalance = tradeday AND TradeMonth;

dt = DateTime();
Buy = Sell = possize = 0; 

fh = fopen( SignalFile, "r" );
	if( fh )
	 {
		 while( ! feof( fh ) )
		 {
			 line = fgets( fh );	 
			 sym = StrExtract( line, 0 );
			 CategoryAddSymbol( sym, categoryWatchlist, Wlist ); 
		 }
		 fclose( fh );
	 }
	 else
	 {
		 Error( "ERROR: file can not be open" );
	 }
	// Run and Process Trades
	fh = fopen( SignalFile, "r" );
	if( fh )
	 {
		 while( ! feof( fh ) )
		 {
			 line = fgets( fh );
			 sym = StrExtract( line, 0 );
			 if ( Name() == sym )
			 {
				 trade = StrExtract( line, 1 );
				 trade_datetime = StrToDateTime( StrExtract( line, 2 ) );
				 if ( trade == "Buy" )
				 {
					 newbuy = dt == trade_datetime;
					 Buy = Buy OR newbuy; 
				 }
				 if ( trade == "Sell" )
				 {
					 newsell = dt == trade_datetime;
					 Sell = Sell OR newsell; 
				 }
			 }
		 }
		 fclose( fh );
	 }
	 else
	 {
		 Error( "ERROR: file can not be open" );
	 }

SetPositionSize( 10, spsPercentOfEquity );  or paste code here

To get better understanding of what is happening in your code and how functions work, use advice given here: How do I debug my formula?