[RaeF]

Try debug your code maybe like this:

Код:

YCMD:shop(playerid,params[],help)
{
    sendclientmessage(playerid, -1, "Command Called");
    new listtext[512],substr[40];
	if(help)
	{
            sendclientmessage(playerid, -1, "Help Called");
	    SEM(playerid,"CMDINFO: Displays shop to buy special weapons!");
	    return 1;
	}
	forex(i, 13)
	{
	    if(PlayerInfo[playerid][WeaponsPurchased][i])
	    {
	        format(substr,sizeof(substr),"%s - {33AA33}PURCHASED\n",GunNames[SelledGun[i][Weaponid]]);
	    }
	    else
	    {
            format(substr,sizeof(substr),"%s - $%d\n",GunNames[SelledGun[i][Weaponid]],SelledGun[i][Price]);
	    }
	    strcat(listtext,substr,sizeof(listtext));
	}
	ShowPlayerDialog(playerid,DIALOG_BUY_GUN,DIALOG_STYLE_LIST,"Guns Shop",listtext,"Buy","Exit");
	return 1;
}

If you don't get the message, that's the real y_commands problem, do you use OnPlayerCommandPerfomed or OnPlayerCommandReceived??