I am having the same issue and came here looking for answers. Happy to at least know I am not the only one who can’t get the dang thing working
See if you have the following form code…
<form method=”post” action=”<?php echo $_SERVER[‘REQUEST_URI’]; ?>”>
and change it to something like this (use PHP_SELF) – this is from the Lester Chan line of plug ins. This was postede there and I tested it out (on an IIS box that didn’t like REQUEST_URI).
<form method=”post” action=”<?php echo $_SERVER[‘PHP_SELF’]; ?>?page=<?php echo plugin_basename(__FILE__); ?>&updated=true”>