Index: phase3/includes/Article.php
===================================================================
--- phase3/includes/Article.php	(revision 71282)
+++ phase3/includes/Article.php	(working copy)
@@ -3476,6 +3476,9 @@
 			$revId = false;
 		}
 
+		if( !$status->isOK() )
+			return array( array( 'cantrollback' ) );
+
 		wfRunHooks( 'ArticleRollbackComplete', array( $this, $wgUser, $target, $current ) );
 
 		$resultDetails = array(