Struggling with Since Last Visit

I’ve been struggling the past couple of days with Alex King’s plugin, Since Last Visit (v2.2). Step 3 of the README calls for the following line in the HEAD section:
<?php require(bloginfo('url;').'/wp-content/plugins/wp-last-visit.php?type=js'); ?>
I simply could not get this to work. I ended up with a bunch of errors, and I would post them except they are not on my screen now. Something about not being able to find the wp-last-visit.php file. I downloaded the WP package Alex offers (with all the plugins preinstalled) and found he was using the following line in the index.php file:
<script type="text/javascript" src="<?php bloginfo('url'); ?>/wp-content/plugins/wp-last-visit.php?type=js"></script>
I used this line for step 3 of the install and now I’m not getting any errors, but nothing from SLV shows up on the page. Not the “so many posts/comments since your last visit” banner, nor do any of the “new” graphics display after new posts and comments are put on. (Remaining steps in REAME followed meticulously, and compared with Alex’s WP package)
I do notice a lot of cookies, though. I cleared all the cookies for my site, and then visited just my main page and counted 8 cookies from wplastvist on my site. Is this normal? Before I cleared the cookies there were 22 of them.
So obviously the plugin is active, its just not displaying anything on the page. Can anyone help me out here? I’ve done a lot of searching and reading but haven’t found anything helpful … yet. Thanks.