Questions in general

• Why are there errors in ZIP backups?
  
• How works the directory backup feature?
  
• Can I translate phpMyBackupPro to my language?
  
• Why were the old backups on my FTP server not deleted?
  
• How can I use the access keys?
  
• Why do I get warnings like 'Notice: Undefined index: SCRIPT_FILENAME in C:\\abc\\def\\phpmybackup\\functions.inc.php on line 607' or why can't I login?