Problems saving Voting "Enable for Image:

I Installed NextGen Gallery.
I then installed voting.
I can get Gallery Voting – no stress.

I edited the gallery.php file to add the code line

[ Moderator Note: Please post code or markup snippets between backticks or use the code button. As it stands, your code may now have been permanently damaged/corrupted by the forum’s parser. ]

<?php echo nggv_imageVoteForm($image->pid); ?>

into it. The actual code around looks like:

<!-- Thumbnails -->
	<?php foreach ( $images as $image ) : ?>

	<div id="ngg-image-<?php echo $image->pid ?>" class="ngg-gallery-thumbnail-box" <?php echo $image->style ?> >
		<div class="ngg-gallery-thumbnail" >
			<a>imageURL ?>" title="<?php echo $image->description ?>" <?php echo $image->thumbcode ?> >
                                <?php echo nggv_imageVoteForm($image->pid); ?>
				<?php if ( !$image->hidden ) { ?>
				<img title="<?php echo $image->alttext ?>" alt="<?php echo $image->alttext ?>" src="<?php echo $image->thumbnailURL ?>" <?php echo $image->size ?> />
				<?php } ?>
			</a>
		</div>
	</div>

However, in the back end of NextGen gallery I turn on “Enable for Image” but when I save it comes back without the tick.

What am I doing wrong?

http://ww.wp.xz.cn/extend/plugins/nextgen-gallery-voting/