Wordpress Custom Posts Types do not work in Internet Explorer - 404 Shown

I've asked before about this an never did get an answer.

Visit this URL in firefox and everything looks fine - http://www.financeforindustry.org/ffi-show/southern-manufacturing-2014/

Now try visiting the same URL in Internet Explorer - you get a 404


Chrome and Safari also give 404 errors - so how can Firefox find this page and the others cannot.
Sean ClarkeOwner / ManagerAsked:
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Sean ClarkeConnect With a Mentor Owner / ManagerAuthor Commented:
Solved this.

My posts were about events that were posted in the future.

So when I am logged in as an administrator, the test to see WHEN a post was posted was ignored.
When I logged out or someone else viewed it naturally the page doesn't display as it's posted in the future (when the end is due)
FF gives me 404 error....

Firefox screenshot with 404 error
Sean ClarkeOwner / ManagerAuthor Commented:
Holy hell now it gets even more complicated.

Yes all you people out there in EE land will get a 404 in every browser.

HOWEVER when I login to Wordpress and visit the page it shows up fine in FF. Log out and I get a 404 - seriously... Login fine... logout 404... WTF

I've wasted hours of my life trying to get custom posts to use the right permalink settings.
currently /%category%/%postname%/

I've tried everything in my permalinks, no change - just 404's

I followed this guide on how to setup a custom post - http://wp.smashingmagazine.com/2012/11/08/complete-guide-custom-post-types/

The code from my functions.php file is below

function my_custom_post_shows() {
	$labels = array(
		'name'               => _x( 'Shows', 'post type general name' ),
		'singular_name'      => _x( 'Show', 'post type singular name' ),
		'add_new'            => _x( 'Add Show', 'book' ),
		'add_new_item'       => __( 'Add New Show' ),
		'edit_item'          => __( 'Edit Show' ),
		'new_item'           => __( 'New Show' ),
		'all_items'          => __( 'All Shows' ),
		'view_item'          => __( 'View Show' ),
		'search_items'       => __( 'Search Shows' ),
		'not_found'          => __( 'No shows found' ),
		'not_found_in_trash' => __( 'No shows found in the Trash' ), 
		'parent_item_colon'  => '',
		'menu_name'          => 'Shows'
	$args = array(
		'labels'        => $labels,
		'description'   => 'Holds shows and events',
		'public'        => true,
		'menu_position' => 5,
		'supports'      => array( 'title', 'editor', 'thumbnail', 'excerpt', 'comments' ),
		'has_archive'   => true,
	register_post_type( 'ffi-shows', $args );
add_action( 'init', 'my_custom_post_shows' );

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Jason C. LevineNo oneCommented:

I never even thought to ask about that...nice catch.
Sean ClarkeOwner / ManagerAuthor Commented:
Should have spotted this earlier
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