hi,
kind of have the same problem, i changed the url of the blog to see if it would help as i wanted it to be mysite/blog not /Blog as i thought lower case would be better to type. I then had to change it back for various reasons and now when ever i try to filter posts or save changes in the admin area the page it looks for is not found. its looking in /Blog/wp-admin/edit.php (which does exist on server) but finds nothing.
Any help or suggestions greatly appreciated…
UPDATE{ If it helps, even the next page 1, 2, 3 option goes to page not found…. Please help!