Index: branches/unlabeled/unlabeled-1.58.2/core/kernel/utility/unit_config_reader.php
===================================================================
diff -u -r5919 -r5970
--- branches/unlabeled/unlabeled-1.58.2/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 5919)
+++ branches/unlabeled/unlabeled-1.58.2/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 5970)
@@ -125,7 +125,7 @@
 
 	function scanModules($folderPath, $cache = true)
 	{
-		if (defined('IS_INSTALL') && IS_INSTALL) {
+		if (defined('IS_INSTALL') && IS_INSTALL && !defined('FORCE_CONFIG_CACHE')) {
 			// disable config caching during installation
 			$cache = false;
 		}