Comment 2 for bug 758100

Traceback (most recent call last):
  File "./backup_gmail.py", line 484, in <module>
    doBackup(options, TerminalProgress())
  File "./backup_gmail.py", line 454, in doBackup
    backup.backupTo([options.start_date, options.end_date], overwrite, include_labels, exclude_labels)
  File "./backup_gmail.py", line 293, in backupTo
    self.checkDir(overwrite)
  File "./backup_gmail.py", line 276, in checkDir
    raise e
OSError: [Errno 13] Permission denied: '/backupgmail'
username or password incorrect