I'm running LBP version 2.6 on WP 3.5.1 and it was spitting out some annoying warnings about undefined variables:
Notice: Undefined variable: theOptions in /path/to/wp/wp-content/plugins/lightbox-plus/lightboxplus.php on line 260 Notice: Undefined variable: theOptions in /path/to/wp/wp-content/plugins/lightbox-plus/lightboxplus.php on line 261 Notice: Undefined variable: lightboxPlusOptions in /path/to/wp/wp-content/plugins/lightbox-plus/lightboxplus.php on line 203
To fix this, I added the following on line 203:
$lightboxPlusOptions = ( isset( $lightboxPlusOptions ) ) ? $lightboxPlusOptions : '';
and this on line 255:
$theOptions = ( isset( $theOptions ) ) ? $theOptions : '';
Basically, if the variable is set, set the value to itself, otherwise, set the value to null so PHP will shut up about it. I'm sure there's a more elegant way to handle this, but this got the problem solved and doesn't affect the rest of the code... There is a chance that if I'm feeling ambitious later, I'll go back and take a look later to find a less hackish fix. :)
Thanks for all your hard work!