ecoscope

it works for me after adding the following to
wp-content/plugins/nextgen-gallery/nggfunctions.php

WP 2.7, NGG 1.0.1

nggfunctions.php line 57:

// create the output
$out = "\n".'<script type="text/javascript" src="'.NGGALLERY_URLPATH.'/admin/js/swfobject.js"></script>';
$out .= '<div class="slideshow">' . $swfobject->output() . '</div>';