diff -urN ../roundcubemail-1.1.0.orig/plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php ./plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php
--- ../roundcubemail-1.1.0.orig/plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php	2015-02-08 15:43:28.000000000 +0200
+++ ./plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php	2015-02-22 20:27:30.000000000 +0200
@@ -2324,7 +2324,7 @@
         $i      = 1;
 
         foreach ($this->script as $idx => $filter) {
-            if (empty($filter['actions'])) {
+            if ((empty($filter['actions'])) or (empty($filter['type']))) {
                 continue;
             }
             $fname = $filter['name'] ? $filter['name'] : "#$i";