Index: wp-admin/includes/image-edit.php
===================================================================
--- wp-admin/includes/image-edit.php	(revision 36357)
+++ wp-admin/includes/image-edit.php	(working copy)
@@ -251,7 +251,8 @@
 		 * @param int             $post_id Post ID.
 		 */
 		$image = apply_filters( 'image_editor_save_pre', $image, $post_id );
-
+		while ( @ob_end_clean() );
+		
 		if ( is_wp_error( $image->stream( $mime_type ) ) )
 			return false;