12.10 cifs shares not mounting after modifying /etc/fstab

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http://askubuntu.com – From Ubuntu 11.04 to 12.04 i've been able to mount my nas shares by first making directories in the /media folder, then sudo gedit /etc/fstab to include the following line for each share I want to auto-mount; //servername/sharename /media/windowsshare cifs guest,uid=1000,iocharset=utf8,codepage=unicode,unicode 0 0 Now, however, I upgraded to 12.10, and suddenly I'm not able to mount the shares after saving /etc/fstab and sudo mount -a, giving me this error: Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) mount error(22): Invalid argument When in Nautilus, The shares are (HowTos)