LiteSpeed for SQL Server 5.1 fails on Japanese environment. Both operating system and SQL Server are on 2008. The Backup (and Restore) wizard is failing in version 5.1. The wizard will report success but no backup file is created. Similarly restore fails because no backup file is available for restore.
Run LiteSpeed for SQL Server 5.0.2 instead of 5.1.
Waiting for a fix in a future release of LiteSpeed for SQL Server.