Tested on WP 3.5.1. unfortunately, this app crashed my whole admin area. I use:
maybe the plugin does not support Better WP settings for security.
Other apps seem to be working fine on the front end.
The used theme is Bazar.
On the back-end when I supposed to log in through my custom generated admin link it logged me in to standard /wp-admin and showed white screen; from the storefront I was clicking any button on the admin panel and it still would get me to the white /wp-admin screen. I guess your pluging does not want to work together with /CustomAdminLoginURLs, I mean it shows the login screen and all that, but after credentials just takes you to /wp-admin
I got back to my Admin Dashboard only after I deleted the plugin at /wp-content/plugins/background-manager
Will change to 5-star if fix provided.
Now tested on completely clean WP installation with WP Secure plugin installed first and all tweaks enabled, then installed your plugin, and it works fine, no malfunctions. I guess that most important plugins like for security etc. have to be installed on a clean version otherwise they cause database malfunctions and crashes the whole website.