Don't set Base User and Base Group when Base DN was detected, would case problems but does not provide any benefit. also make sure that empty string is saved instead of false for multiline values

apps/user_ldap/lib/configuration.php

@@ -243,6 +243,9 @@ class Configuration {
 			$value = '';
 		} else {
 			$value = preg_split('/\r\n|\r|\n/', $value);
+			if($value === false) {
+				$value = '';
+			}
 		}
 
 		$this->setValue($varname, $value);

apps/user_ldap/lib/wizard.php

@@ -424,11 +424,8 @@ class Wizard extends LDAPUtility {
 		$i = stripos($this->configuration->ldapAgentName, 'dc=');
 		if($i !== false) {
 			$base = substr($this->configuration->ldapAgentName, $i);
-
 			if($this->testBaseDN($base)) {
 				$this->applyFind('ldap_base', $base);
-				$this->applyFind('ldap_base_users', $base);
-				$this->applyFind('ldap_base_groups', $base);
 				return $this->result;
 			}
 		}
@@ -445,8 +442,6 @@ class Wizard extends LDAPUtility {
 		$base2 = implode('dc=', $dparts);
 		if($base !== $base2 && $this->testBaseDN($base2)) {
 			$this->applyFind('ldap_base', $base2);
-			$this->applyFind('ldap_base_users', $base2);
-			$this->applyFind('ldap_base_groups', $base2);
 			return $this->result;
 		}