After upgrading 5 blogs to WordPress 2.8 I noticed that every one of them displayed an error that disappeared when I removed wp_footer() from the theme. The error was as follows:
Warning: Invalid argument supplied for foreach() in /blogpath/blogname/wp-admin/menu.php on line 38
I use some plugins that need wp_footer() so I have to figure out what's going on.
Anyone else have this problem? Any ideas?