If someone added the ErrorDocument 404 directive to their .htaccess, and then disabled Google SEO 404 without removing it, all 404 pages will go to an empty white misc.php page, and even worse, also end up in the who is online list as unknown location.
Technically this is not the fault of the plugin but a user error. The user should not put the ErrorDocument directive in his .htaccess if he does not intend to use it. However, it would not hurt to add a warning to the plugin status, telling the user he should remove this directive when Google SEO 404 is disabled.
frostschutz
commented
13 years ago
If someone added the ErrorDocument 404 directive to their .htaccess, and then disabled Google SEO 404 without removing it, all 404 pages will go to an empty white misc.php page, and even worse, also end up in the who is online list as unknown location.
Technically this is not the fault of the plugin but a user error. The user should not put the ErrorDocument directive in his .htaccess if he does not intend to use it. However, it would not hurt to add a warning to the plugin status, telling the user he should remove this directive when Google SEO 404 is disabled.