DavieR

Add
<option value='inside' <?php selected('inside', $options['position']); ?>>Inside</option>
after Line 119 in the plugin’s index.php file. You will see the L, R, top and bottom options there.

It works for WP 2.5 for me too. As slowwaydown said “Enable the Scriptaculous Effects”. I also had to reset the font colours.