From fdf4f195dfc5606973a899a871e12e2d35d7b0e2 Mon Sep 17 00:00:00 2001
From: Andrew Nacin <nacin@git.wordpress.org>
Date: Thu, 27 May 2010 02:03:06 +0000
Subject: [PATCH] Nicer message for an uninstalled/invalid importer. see
 #13566.

git-svn-id: https://develop.svn.wordpress.org/trunk@14970 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/admin.php  | 7 +++----
 wp-admin/import.php | 3 +++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/wp-admin/admin.php b/wp-admin/admin.php
index 101000e87a..1932caf888 100644
--- a/wp-admin/admin.php
+++ b/wp-admin/admin.php
@@ -160,14 +160,13 @@ if ( isset($plugin_page) ) {
 	if ( ! current_user_can('import') )
 		wp_die(__('You are not allowed to import.'));
 
-	if ( validate_file($importer) ) {
-		wp_die(__('Invalid importer.'));
-	}
+	if ( validate_file($importer) )
+		wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );
 
 	// Allow plugins to define importers as well
 	if ( !isset($wp_importers) || !isset($wp_importers[$importer]) || ! is_callable($wp_importers[$importer][2])) {
 		if (! file_exists(ABSPATH . "wp-admin/import/$importer.php"))
-			wp_die(__('Cannot load importer.'));
+			wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );
 		include(ABSPATH . "wp-admin/import/$importer.php");
 	}
 
diff --git a/wp-admin/import.php b/wp-admin/import.php
index bfeb3d59f2..525140626e 100644
--- a/wp-admin/import.php
+++ b/wp-admin/import.php
@@ -31,6 +31,9 @@ $parent_file = 'tools.php';
 <div class="wrap">
 <?php screen_icon(); ?>
 <h2><?php echo esc_html( $title ); ?></h2>
+<?php if ( ! empty( $_GET['invalid'] ) ) : ?>
+	<div class="error"><p><strong><?php _e('ERROR:')?></strong> <?php printf( __('The <strong>%s</strong> importer is invalid or is not installed.'), esc_html( $_GET['invalid'] ) ); ?></p></div>
+<?php endif; ?>
 <p><?php _e('If you have posts or comments in another system, WordPress can import those into this site. To get started, choose a system to import from below:'); ?></p>
 
 <?php