Index: boost.module
===================================================================
--- boost.module	(revision 614)
+++ boost.module	(working copy)
@@ -510,8 +510,10 @@
   
   #flush caches
   boost_cache_expire($path_alias, $wildcard);
-  foreach($path_redirects as $path_redirect) {
-    boost_cache_expire($path_redirect['path'], $wildcard );
+  if (isset($path_redirects)) {
+    foreach($path_redirects as $path_redirect) {
+      boost_cache_expire($path_redirect['path'], $wildcard );
+    }
   }
   boost_cache_expire($path, $wildcard);