Warn if upload dir not writable when importing. Props filosofo. fixes #8048

git-svn-id: http://svn.automattic.com/wordpress/trunk@10561 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/template.php

@@ -2703,6 +2703,11 @@ function wp_max_upload_size() {
 function wp_import_upload_form( $action ) {
 	$bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() );
 	$size = wp_convert_bytes_to_hr( $bytes );
+	$upload_dir = wp_upload_dir();
+	if ( ! empty( $upload_dir['error'] ) ) :
+		?><div class="error"><p><?php _e('Before you can upload your import file, you will need to fix the following error:'); ?></p>
+		<p><strong><?php echo $upload_dir['error']; ?></strong></p></div><?php 
+	else : 
 ?>
 <form enctype="multipart/form-data" id="import-upload-form" method="post" action="<?php echo attribute_escape($action) ?>">
 <p>
@@ -2717,6 +2722,7 @@ function wp_import_upload_form( $action ) {
 </p>
 </form>
 <?php
+	endif;
 }
 
 /**