I was having a similar issue. For example when I hit the “save changes” button on the general options page, wp was redirecting to /wp-admin/options.php rather than /wp-admin/options-general.php?updated=true.
Turns out it was the fault of a buggy theme. Weird, because the theme looked and acted fine from the outside, but it was causing all sorts of problems in the admin panels.
I’m looking to do the same thing.
