I just downloaded the plugin from WP and tried to install it on my site. Got the same message:
Fatal error: Cannot redeclare landing_page_activate() (previously declared in /my-site-directory/public_html/wp-content/themes/my-theme/functions/plugins/landing-pages/landing-pages.php:38) in /my-site-directory/public_html/wp-content/plugins/landing-pages/landing-pages.php on line 67
Plugin version 1.0.9.2
