// Remove the admin bar from displaying…everywhere
add_filter(‘show_admin_bar’, ‘__return_false’);

Note that I looked at the info being passed to the functions and the usual suspects for looking at wether it was an autosave or not weren’t helping.

My biggest problem came when typing a title in the custom post type, then clicking outside of the title field.  Normally this kicks off the autosave feature automatically so the post permalink can be established and displayed below the post title.  Since I wasn’t using this custom post type on the front of end of the site, I really didn’t care about that.

So now for the easiest way to disable autosave for the custom post type:

function seans_admin_init() {
	if (!empty($_GET['post']) || (!empty($_GET['post_type']) && $_GET['post_type'] == '[custom_post_type]')) {
		$post_type = '';

		if (!empty($_GET['post'])) {
			$post_type = get_post_type(intval($_GET['post']));
		}
		else if (!empty($_GET['post_type'])) {
			$post_type = $_GET['post_type'];
		}

		if (!empty($post_type) && $post_type == '[custom_post_type]') {
			// Hi, I block Autosave from running on posts
			wp_deregister_script('autosave');
		}
	}

}
add_action('admin_init', 'seans_admin_init');

NOTE: If you are in WP 2.8 WordPress allows you to run those functions at admin_init, but don’t be fooled they will break again in WP 2.8.1.

Also I have noticed some issue in the past with the flash uploader and it displaying HTTP Errors.  I have found that if the server is protected by 401 Authentication this happens.  I am sure that there are other problems that cause this, but this is the first fix I have found in my troubleshooting.

With the PHP values, if you need to upload large files you will either need to edit the php.ini file, or edit the .htaccess file to get the values high enough so PHP doesn’t run out of memory with the upload.

To set the PHP values in .htaccess:

1. Add the following:
   • php_value upload_max_filesize #M
   • php_value post_max_size #+1M

With post_max_size, the number of M’s needs to be higher than the upload_max_filesize, and from my testing adding 1 to the upload_max_filesize is enough to suffice.

WordPress restricts uploads in a different way.  In WPMU in the wp_sitemeta table there are 3 fields that need to be updated when large files need to be uploaded.

They are:

1. blog_upload_space – The amount of space a single blog has to upload files to
2. fileupload_maxk – The largest file that may be uploaded (I believe this is in bytes)
3. upload_filetypes – This restricts the MIME type that can be uploaded I believe through the Flash uploader