Index: branches/RC/core/kernel/utility/unit_config_reader.php
===================================================================
diff -u -N -r8929 -r9131
--- branches/RC/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 8929)
+++ branches/RC/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 9131)
@@ -240,8 +240,12 @@
 			$this->AfterConfigProcessed[] = $prefix;
 		}
 
-		if ($this->StoreCache) {
+		if ($this->StoreCache || (defined('IS_INSTALL') && IS_INSTALL)) {
+			// cache is not stored during install, but dynamic clones should be processed in any case
 			$this->processDynamicClones();
+		}
+
+		if ($this->StoreCache) {
 			$this->CacheParsedData();
 
 			if ($this->Application->isDebugMode(false) && constOn('DBG_VALIDATE_CONFIGS')) {