-'error.auth' => 'hibás bejelentkezési adatok',
-// Note to translators: this string needs to be translated.
-// 'error.user_exists' => 'user with this login already exists',
-'error.project_exists' => 'ilyen nevű projekt már létezik',
-'error.activity_exists' => 'ilyen névvel már van definiálva tevékenység',
-// TODO: translate error.client_exists.
-// 'error.client_exists' => 'client with this name already exists',
-// Note to translators: this string needs to be properly translated (e-mail replaced with login).
-// 'error.no_login' => 'nincs ilyen e-mail címmel definiált felhasználó',
-'error.upload' => 'file feltöltési hiba',
+// 'error.auth' => 'Incorrect login or password.',
+// 'error.user_exists' => 'User with this login already exists.',
+'error.project_exists' => 'Ilyen nevű projekt már létezik.',
+// TODO: translate the following.
+// 'error.task_exists' => 'Task with this name already exists.',
+// 'error.client_exists' => 'Client with this name already exists.',
+// 'error.invoice_exists' => 'Invoice with this number already exists.',
+// 'error.no_invoiceable_items' => 'There are no invoiceable items.',
+// 'error.no_login' => 'No user with this login.',
+// 'error.no_teams' => 'Your database is empty. Login as admin and create a new team.',
+'error.upload' => 'File feltöltési hiba.',