为什么这个js幻灯片在一个安装上有效，而在另一个安装中无效

我正在建一个新网站。我在这里有dev的第一页：http://dev.rouviere.com/yoga/一切正常，包括图像幻灯片。

然而，在这个运行在Expression Engine上的安装中，幻灯片放映不起作用，我在Chrome Inspector中得到了以下错误：

未捕获的语法错误：意外的标记<

我需要另一双眼睛来帮助我看到我在这里缺少了什么。所有资源都在加载，包括四个按钮/点的图像，但有一些错误导致脚本失败，幻灯片无法播放。

HTML

<div class="window">
    <div class="image_reel">
        <a href="#"><img src="/images/slideshow-1.jpg" alt="" /></a>
        <a href="#"><img src="/images/slideshow-1.jpg" alt="" /></a>
        <a href="#"><img src="/images/slideshow-1.jpg" alt="" /></a>
        <a href="#"><img src="/images/slideshow-1.jpg" alt="" /></a>
    </div>
</div><!-- end window -->

有问题的脚本：

$(document).ready(function() {
    //Set Default State of each portfolio piece
    $(".paging").show();
    $(".paging a:first").addClass("active");
    //Get size of images, how many there are, then determin the size of the image reel.
    var imageWidth = $(".window").width();
    var imageSum = $(".image_reel img").size();
    var imageReelWidth = imageWidth * imageSum;
    //Adjust the image reel to its new size
    $(".image_reel").css({'width' : imageReelWidth});
    //Paging + Slider Function
    rotate = function(){    
        var triggerID = $active.attr("rel") - 1; //Get number of times to slide
        var image_reelPosition = triggerID * imageWidth; //Determines the distance the image reel needs to slide
        $(".paging a").removeClass('active'); //Remove all active class
        $active.addClass('active'); //Add active class (the $active is declared in the rotateSwitch function)
        //Slider Animation
        $(".image_reel").animate({ 
            left: -image_reelPosition
        }, 500 );
    }; 
    //Rotation + Timing Event
    rotateSwitch = function(){      
        play = setInterval(function(){ //Set timer - this will repeat itself every 3 seconds
            $active = $('.paging a.active').next();
            if ( $active.length === 0) { //If paging reaches the end...
                $active = $('.paging a:first'); //go back to first
            }
            rotate(); //Trigger the paging and slider function
        }, 10000); //Timer speed in milliseconds (3 seconds)
    };
    rotateSwitch(); //Run function on launch
    //On Hover
    $(".image_reel a").hover(function() {
        clearInterval(play); //Stop the rotation
    }, function() {
        rotateSwitch(); //Resume rotation
    }); 
    //On Click
    $(".paging a").click(function() {   
        $active = $(this); //Activate the clicked paging
        //Reset Timer
        clearInterval(play); //Stop the rotation
        rotate(); //Trigger rotation immediately
        rotateSwitch(); // Resume rotation
        return false; //Prevent browser jump to link anchor
    }); 
});