Code robustness: Though the commit [4922] solves the issue N.1052, it is safer to reset the cache as part of the "Commit" performed during the installation process.

SVN:trunk[4923]

setup/runtimeenv.class.inc.php

@@ -958,6 +958,8 @@ class RunTimeEnvironment
 			$this->CommitFile($sTargetConfig, $sFinalConfig);
 			@chmod($sFinalConfig, 0440); // Read-only for owner and group, nothing for others
 			@rmdir(dirname($sTargetConfig)); // Cleanup the temporary build dir if empty
+
+			MetaModel::ResetCache(md5(APPROOT).'-'.$this->sFinalEnv);
 		}
 	}