You have asked for somebody to test "Invalid credentials" error during backup, well I have it. IMAP is enabled. I sign in with my Microsoft / Gmail account password and get the message.
Error: IMAP: [ALERT] Application-specific password required: http://support.google.com/accounts/bin/answer.py?answer=185833 (Failure)
On hitting quit, I get
The logfile 'C:\Program Files (x86)\GmailBackup\gmail-backup-gui.exe.log' could
not be opened:
[Errno 13] Permission denied 'C:\\Program Files
(x86)\GmailBackup\gmail-backup-gui.exe.log'
Error: IMAP: [ALERT] Application-specific password required: http://support.google.com/accounts/bin/answer.py?answer=185833 (Failure)
On hitting quit, I get
The logfile 'C:\Program Files (x86)\GmailBackup\gmail-backup-gui.exe.log' could
not be opened:
[Errno 13] Permission denied 'C:\\Program Files
(x86)\GmailBackup\gmail-backup-gui.exe.log'
