Trouble trouble… captcha-on-login/index.php deactivated

Keep having problems with this plugin. It happens often and now I decided to find another option. The concept sounded great but in reality its not very good. Sometimes it doesnt even show a picture of the captcha and then you cant login! Then you manually have to go to the ftp and delete the plugin to log in…

sometimes it says captcha-on-login/index.php deleted as the plugin does not exist!