[SOLVED] CIFS mount problem

[nas963]

As I am new here first I wish a lot of joy to all Snakeoil music lovers.
But, I have a problem with mounting shared drives which reside on Win 7 computer.
I have another box with Volumio where I need to enter vers=2.1 to be able to access the shared folders. In Snakeoil when I enter vers parameter either from GUI or when I try to mount shared folders from the terminal response is 'mount error(22).Invalid argument'.
Even I got the error, folder is created in /media/music but is empty. Shared folders are password protected.
If I try to connect without username/password when clicking on Save button, nothing happens but in the terminal is displayed the message:

Password entry required for 'Password for root@//192.168.1.25/Muzika:' (PID 4069).
Please enter a password with the systemd-tty-ask-password-agent tool!

If I try vers=1.0 there is no complaint about the invalid argument but share failed with error 'mount error(121): Remote I/O error'.

Is there any way to enable vers=2.1?