property of non-object error inactions.class.php on line 139

Trying to get property of non-object in …
/htdocs/blog/wp-content/plugins/lightbox-plus/classes/actions.class.php on line 139

is the error I was getting on blank search or 404.php

it only appears if the search is empty and on the 404 page.

I commented OUT line:
137 // if ( $lightboxPlusOptions[‘fixed’] == ‘1’ ) { $lbpArrayPrimary[] = ‘fixed:’.$this->setBoolean( //$lightboxPlusOptions[‘fixed’] ); }
138 // if (!is_admin()) {
139 // $lbp_autoload = get_post_meta( $post->ID, ‘_lbp_autoload’, true );
140 // if ( $lbp_autoload == ‘1’ ) { $lbpArrayPrimary[] = ‘open:true’; }
141 // }

and the error goes away…

I also tested it in the default twentytwelve theme and got the same error…

Doesn’t seem to affect the lightbox plus functions on other pages.

Any ideas??

[duplicate – please continue with http://wordpress.org/support/topic/actionsclassphp-on-line-139 ]