when having “WP_DEBUG” on “true”, there are indeed a lot of warnings (I think most of them concern undefined indexes of $_POST vars):
f.e. when creating a new page:
Notice: Undefined index: redirector_nonce in […] wp-content/plugins/redirector/redirector.php on line 227
Notice: Undefined variable: checked_page in […] wp-content/plugins/redirector/redirector.php on line 189
Notice: Undefined variable: checked_url in […] wp-content/plugins/redirector/redirector.php on line 190
Notice: Undefined variable: checked_child in […] wp-content/plugins/redirector/redirector.php on line 191
Notice: Undefined variable: checked_https in […] wp-content/plugins/redirector/redirector.php on line 192
Notice: Undefined variable: redirect_url in […] wp-content/plugins/redirector/redirector.php on line 206