Index: typo3/sysext/saltedpasswords/classes/class.tx_saltedpasswords_div.php
===================================================================
--- typo3/sysext/saltedpasswords/classes/class.tx_saltedpasswords_div.php	(Revision 6840)
+++ typo3/sysext/saltedpasswords/classes/class.tx_saltedpasswords_div.php	(Arbeitskopie)
@@ -136,6 +136,10 @@
 				// Login Security Level Recognition
 			$extConf = self::returnExtConf($mode);
 			$securityLevel = $GLOBALS['TYPO3_CONF_VARS'][$mode]['loginSecurityLevel'];
+			if (!$securityLevel) {
+				$securityLevel = 'normal';
+			}
+
 			if ($mode == 'BE' && $extConf['enabled']) {
 				return (($securityLevel =='normal' && $GLOBALS['TYPO3_CONF_VARS']['BE']['lockSSL'] > 0) || $securityLevel == 'rsa');
 			} else if ($mode =='FE' && $extConf['enabled']) {