modal image descr were broken because of double quotes in fancy box, using smarty escape
to mitigate this problem
{foreach $imageGallery as $i}
<li>
<a class="glm-member-detail-images-thumb fancybox" data-fancybox="images" rel="gallery1" href="{$glmPluginMediaUrl}/images/large/{$i.file_name}" style="background-image: url('{$glmPluginMediaUrl}/images/small/{$i.file_name}')">
- <img class="glm-member-filler-image" src="{$assetsUrl}/filler_s.gif" alt="{$i.caption}" data-caption="{$i.descr}">
+ <img class="glm-member-filler-image" src="{$assetsUrl}/filler_s.gif" alt="{$i.caption}" data-caption="{$i.descr|escape}">
</a>
<div class="glm-thumb-title">{$i.caption}</div>
</li>