// Fix the display of errors on adding localization pack

classes/LocalizationPack.php

@@ -295,7 +295,6 @@ class LocalizationPackCore
 				// if we are not in an installation context or if the pack is not available in the local directory
 				if (Language::getIdByIso($attributes['iso_code']) && !$install_mode)
 					continue;
-
 				$errors = Language::downloadAndInstallLanguagePack($attributes['iso_code'], $attributes['version']);
 				if ($errors !== true && is_array($errors))
 					$this->_errors = array_merge($this->_errors, $errors);
@@ -304,7 +303,7 @@ class LocalizationPackCore
 		if (!count($this->_errors) && $install_mode && isset($attributes['iso_code']) && count($xml->languages->language) == 1)
 			$this->iso_code_lang = $attributes['iso_code'];
 
-		return true;
+		return !count($this->_errors);
 	}
 
 	protected function _installUnits($xml)