Nextgen slideshow works fine in WP 3.4.1. After upgrading WP (3.5.1) slideshow don’t work.
Here’s the answer to your question.
WordPress 3.3.1
Warning: krsort() expects parameter 1 to be array, string given in …plugins/wordpress-backup-to-dropbox/Classes/class-wp-backup-config.php on line 60
Warning: Invalid argument supplied for foreach() in …/plugins/wordpress-backup-to-dropbox/Views/wp-backup-to-dropbox-options.php on line 205
Fatal error: [] operator not supported for strings in …/plugins/wordpress-backup-to-dropbox/Classes/class-wp-backup-config.php on line 233
