Index: branches/version-2_12-dev/html/install/index.php
===================================================================
--- branches/version-2_12-dev/html/install/index.php	(revision 21867)
+++ branches/version-2_12-dev/html/install/index.php	(revision 21869)
@@ -374,4 +374,8 @@
         $objPage->tpl_mode = 'step0';
         umask(0);
+        $path = DATA_REALDIR . 'downloads/plugin';
+        if (!file_exists($path)) {
+            mkdir($path);
+        }
         $path = HTML_REALDIR . 'plugin';
         if (!file_exists($path)) {