diff --git a/change_log.txt b/change_log.txt
index ce024609..3157a319 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,6 +1,7 @@
 ===== trunk  =====
 20.10.2011
 - @silenced unlink() in Smarty_Internal_Write_File since debuggers go haywire without it.
+- bugfix Smarty::clearCompiledTemplate() threw an Exception if $cache_id was not present in $compile_dir when $use_sub_dirs = true.
 
 19.10.2011
 - revert PHP4 constructor message
diff --git a/libs/sysplugins/smarty_internal_utility.php b/libs/sysplugins/smarty_internal_utility.php
index 2c184cd3..4f25719b 100644
--- a/libs/sysplugins/smarty_internal_utility.php
+++ b/libs/sysplugins/smarty_internal_utility.php
@@ -216,7 +216,11 @@ class Smarty_Internal_Utility {
             $_compile_id_part_length = strlen($_compile_id_part);
         }
         $_count = 0;
-        $_compileDirs = new RecursiveDirectoryIterator($_dir);
+        try {
+            $_compileDirs = new RecursiveDirectoryIterator($_dir);
+        } catch (UnexpectedValueException $e) {
+            return 0;
+        }
         $_compile = new RecursiveIteratorIterator($_compileDirs, RecursiveIteratorIterator::CHILD_FIRST);
         foreach ($_compile as $_file) {
             if (substr($_file->getBasename(), 0, 1) == '.' || strpos($_file, '.svn') !== false)