More information. If I try to access the "wp-admin/options-general.php?page=ice-captcha/ice-captcha.php" from Settings on the "wp-admin/plugins.php" page, I get the same error as above. If I use the side-bar menu under Settings > Ice Captcha, I am able to get to the settings page. But I still cannot change the settings from the default and receive the error above when I try.
A little help would be appreciated here. Thanks.