Hi, I guess that the other guy modify the template of the gallery in use.
[NGG uses the first field (alt) as the image alt tag, the other field (Title Text / Description) is used as the link and image title tag]
If you want to use the “Title Text / Description” text as the thumbnail “title” then use answer A, if you want to use the “Alt” text as the thumbnail “title”, use answer B.
Answer A:
1. Go to “/wp-content/plugins/nextgen-gallery/view/” and rename the file “gallery.php” for something else (ie: gallery.old) and rename the file “gallery-caption.php” to “gallery.php”
2. Save and upload
Answer B:
1. Go to “/wp-content/plugins/nextgen-gallery/view/” and open gallery.php
2. Look for:
<!-- 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 href="<?php echo $image->imageURL ?>" title="<?php echo $image->description ?>" <?php echo $image->thumbcode ?> >
<?php if ( !$image->hidden ) { ?>
<img title="<?php echo $image->description ?>" alt="<?php echo $image->alttext ?>" src="<?php echo $image->thumbnailURL ?>" <?php echo $image->size ?> />
<?php } ?>
</a>
</div>
</div>
3. Change it to:
<!-- 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 href="<?php echo $image->imageURL ?>" title="<?php echo $image->description ?>" <?php echo $image->thumbcode ?> >
<?php if ( !$image->hidden ) { ?>
<img title="<?php echo $image->description ?>" alt="<?php echo $image->alttext ?>" src="<?php echo $image->thumbnailURL ?>" <?php echo $image->size ?> />
<?php } ?>
</a>
<span><?php echo $image->alttext ?></span>
</div>
</div>
(just need to add the <span> line, the third line from the bottom)
4. Save and upload.
Hope this help you.