These texts in the Back-end are not translated (in nightly 679) because they are not set via the language file. All items are in file /administrator/components/com_rsgallery2/options/config.html.php
Text: Use SecurityImages component ( SecurityImages component detected! )
linenumber: 219 and of course then also line 221
$security_notice = "<span style=\"color:#009933;font-weight:bold;\">( SecurityImages component detected! )</span>";
and
$security_notice = "<span style=\"color:#FF0000;font-weight:bold;\">SecurityImages component NOT installed!</span>";
Text: Hide Root (create multiple independant galleries)
linenumber: 276
<td><?php echo 'Hide Root (create multiple independant galleries)'; ?></td>
Text: Resize portrait images by height using Display Picture Width:
linenumber: 302
<td><?php echo "Resize portrait images by height using Display Picture Width:" ?></td>
Text: Display Search
linenumber: 436
<td width="40%"><?php echo "Display Search"; ?></td>
Text: ** Select slideshow **
linenumber: 472
<td><?php echo "** Select slideshow **";?></td>
Text: Select EXIF tags to display
linenumber: 544
<td valign="top"><?php echo "** Select EXIF tags to display **";?></td>