Debug in Card Recycle NPC. how to fix this?

[Heartfelt]

any way to fix this thing? 
happens when i exchange cards for points
im using this script
 

//===== rAthena Script =======================================
//= Card Trader
//===== By: ==================================================
//= Euphy
//===== Current Version: =====================================
//= 1.1 
//===== Compatible With: =====================================
//= rAthena SVN
//===== Description: =========================================
//= Exchange cards for points.
//============================================================

prontera,277,268,3	script	Card Trader	743,{
	mes "[Card Trader]";
	mes "Hi, "+strcharinfo(0)+"!";
	mes "What can I do for you?";
	next;
	switch(select(" > Information: > Trade in cards: > Point shop (^0055FF"+getd(.Points$)+"^000000): > Leave")) {
	case 1:
		mes "[Card Trader]";
		mes "Do you find that you've got";
		mes "useless cards lying around?";
		mes "I'll be glad to take them off";
		mes "your hands!";
		next;
		mes "[Card Trader]";
		mes "I'll give you ^0055FF"+.Points[0]+" Point"+((.Points[0] == 1)?"":"s")+"^000000 for each";
		mes "card you give me, and";
		mes "You can trade those points";
		mes "for items later on.";
		mes "How does that sound?";
		next;
		close;
	case 2:
		mes "[Card Trader]";
		mes "Select the cards you";
		mes "want to trade in.";
		if (.Level) {
			mes " ";
			mes "They must be dropped";
			mes "by monsters of level";
			mes .Level+" and above.";
		}
		deletearray @sold_nameid[0],getarraysize(@sold_nameid);
		callshop "card_shop",2;
		npcshopattach "card_shop";
		end;
	case 3:
		mes "[Card Trader]";
		mes "You have ^0055FF"+getd(.Points$)+"^000000 Point"+((getd(.Points$) == 1)?".":"s.");
		callshop "card_shop",1;
		npcshopattach "card_shop";
		end;
	case 4:
		mes "[Card Trader]";
		mes "*yawn*";
		mes "See you later!";
		next;
		close;		
	}

OnSellItem:
	mes "Cards to sell:";
	mes "-----------------------------------";
	for(set .@i,0; .@i<getarraysize(@sold_nameid); set .@i,.@i+1)
		if (@sold_nameid[.@i] > 4000 && @sold_nameid[.@i] < 4700) {
			if (.Level) {
				query_sql("SELECT `LV` FROM `mob_db` WHERE `DropCardid` = "+@sold_nameid[.@i],.@lv);
				if (.@lv < .Level) {
					dispbottom getitemname(@sold_nameid[.@i])+" is under the minimum level.";
					continue;
				}
			}
			set .@card_id[getarraysize(.@card_id)], @sold_nameid[.@i];
			set .@card_amt[getarraysize(.@card_amt)], @sold_quantity[.@i];
			set .@mvp, compare(.MVP$,""+@sold_nameid[.@i]);
			mes ((.@mvp)?"  ^FF0000":"  ^777777")+@sold_quantity[.@i]+"x "+getitemname(@sold_nameid[.@i])+"^000000";
			set .@card_total, .@card_total+(@sold_quantity[.@i]*((.@mvp)?.Points[1]:.Points[0]));
		}
	deletearray @sold_nameid[0], getarraysize(@sold_nameid);
	deletearray @sold_quantity[0], getarraysize(@sold_quantity);
	if (!.@card_id) {
		mes "  ^777777(none)^000000";
		next;
		close;
	}
	mes " ";
	mes "--- Total: ^0055FF"+.@card_total+" points.^000000 ---";
	next;
	if(select(" > ^0055FFComplete trade...^000000: > ^777777Cancel^000000") == 2) {
		mes "[Card Trader]";
		mes "Oh, okay...";
		next;
		close;
	}
	for(set .@i,0; .@i<getarraysize(.@card_id); set .@i,.@i+1)
		delitem .@card_id[.@i],.@card_amt[.@i];
	setd .Points$, getd(.Points$)+.@card_total;
	mes "[Card Trader]";
	mes "All done!";
	next;
	close;

OnBuyItem:
	for(set .@i,0; .@i<getarraysize(@bought_nameid); set .@i,.@i+1)
		for(set .@j,0; .@j<getarraysize(.Shop); set .@j,.@j+2)
			if (@bought_nameid[.@i] == .Shop[.@j]) {
				set .@cost, .@cost+(.Shop[.@j+1]*@bought_quantity[.@i]);
				break;
			}
	if (.@cost > getd(.Points$)) {
		mes "[Card Trader]";
		mes "You don't have enough Points.";
	}
	else {
		mes "Items purchased:";
		mes "-----------------------------------";
		for(set .@i,0; .@i<getarraysize(@bought_nameid); set .@i,.@i+1) {
			getitem @bought_nameid[.@i], @bought_quantity[.@i];
			mes "  ^777777"+@bought_quantity[.@i]+"x "+getitemname(@bought_nameid[.@i])+"^000000";
		}
		mes " ";
		mes "---------- Total: ^0055FF"+.@cost+" pt.^000000 -------";
		setd .Points$, getd(.Points$)-.@cost;
	}
	deletearray @bought_nameid[0], getarraysize(@bought_nameid);
	deletearray @bought_quantity[0], getarraysize(@bought_quantity);
	next;
	close;

OnInit:
	set .Level,0;   		// Minimum monster level to trade corresponding cards.
	set .Points$,"#Card_Points";	// Variable to store points.
	setarray .Shop[0],		// Card Shop items: <ID>,<point cost>
	  7227,50,
	  20191,150,

	setarray .Points[0],1,1;	// Points per <normal card>,<MVP card>
	set .MVP$,			// List of MVP cards.
	  "4121,4123,4128,4131,4132,4134,4135,4137,4142,4143,4144,4145,4146,4147,4148,4168,4236,"+
	  "4241,4263,4276,4302,4305,4318,4324,4330,4342,4357,4359,4361,4363,4365,4399,4403,4407";
	
	npcshopdelitem "card_shop",909;
	for(set .@i,0; .@i<getarraysize(.Shop); set .@i,.@i+2)
		npcshopadditem "card_shop",.Shop[.@i],.Shop[.@i+1];
	end;
}
-	shop	card_shop	-1,909:364

thanks

[Heartfelt]

anyone please?