I've just intalled the last version (3.4.6) and I've received the message
Fatal error: Cannot redeclare is_plugin_active() (previously declared in /(...)/wp-content/plugins/amr-users/includes/ausers-pluggable.php:3) in /(...)/wp-admin/includes/plugin.php on line 436
And I can not go to the admin part of the web. I've changed the name of the folder by FTP and then everything is allright (but AMR deactivated, of course).
Any ideas or solutions?