Activate plugin fails on WordPress 4.0

Strict Standards: Declaration of bv48fv_data_settings::data() should be compatible with & bv48fv_base::data($data = NULL, $slug = NULL) in /var/www/acrf/wp-content/plugins/mu-widgets/library/base/data/settings.php on line 239

Strict Standards: Declaration of bv48fv_data_settings::form() should be compatible with & bv48fv_base::form($form = NULL, $slug = NULL) in /var/www/acrf/wp-content/plugins/mu-widgets/library/base/data/settings.php on line 239
Mac OS X 2��ATTR�Q$$���com.apple.quarantine0001;543dc63b;Firefox;This resource fork intentionally left blank ��
Fatal error: Uncaught exception ‘Exception’ with message ‘Model muwidgets_._muwidgetstagcloud not loaded’ in /var/www/acrf/wp-content/plugins/mu-widgets/library/base/application.php:84 Stack trace: #0 /var/www/acrf/wp-content/plugins/mu-widgets/library/base/application.php(217): bv48fv_application->setup_models() #1 /var/www/acrf/wp-content/plugins/mu-widgets/library/wordpress/application.php(50): bv48fv_application->__construct(‘/var/www/acrf/w…’) #2 /var/www/acrf/wp-content/plugins/mu-widgets/index.php(11): wv48fv_application->__construct(‘/var/www/acrf/w…’) #3 /var/www/acrf/wp-admin/plugins.php(151): include(‘/var/www/acrf/w…’) #4 /var/www/acrf/wp-admin/plugins.php(153): plugin_sandbox_scrape(‘mu-widgets/inde…’) #5 /var/www/acrf/wp-admin/network/plugins.php(16): require(‘/var/www/acrf/w…’) #6 {main} thrown in /var/www/acrf/wp-content/plugins/mu-widgets/library/base/application.php on line 84

https://wordpress.org/plugins/mu-widgets/