I upgraded from 2.5 to 3.5 (I know, that was asking for it) and am now receiving this error after I try clicking Save on a Page or a Post.
You are not allowed to edit this post.
I initially thought it was a database issue since I was 40MB over the limit on my DB. So I cleared up some logs in there and got it way under. Still receiving the error.
Next I tried deleting a bunch of plugins. I also tried TwentyTen and TwentyTwelve themes and still receiving the same error.
So next I was able to get this error:
Warning: Creating default object from empty value in /homepages/41/d271808796/htdocs/wp-admin/includes/post.php on line 461
So I went there and looked it up and here's what line 461 looks like:
$post->post_content = apply_filters( 'default_content', $post_content, $post );
Any help/tips/advice would be GREATLY appreciated. Thanks!