Index: branches/feature-module-update/convert.php
===================================================================
--- branches/feature-module-update/convert.php	(revision 16582)
+++ branches/feature-module-update/convert.php	(revision 16786)
@@ -118,8 +118,10 @@
     static $alldirs = array();
     $dirs = glob($dir . '/*');
-    if (count($dirs) > 0) {
+    if (is_array($dirs) && count($dirs) > 0) {
         foreach ($dirs as $d) $alldirs[] = $d;
     }
-    foreach ($dirs as $dir) listdirs($dir);
+    if (is_array($dirs)) {
+        foreach ($dirs as $dir) listdirs($dir);
+    }
     return $alldirs;
 }