Error 255 when sharing folder on Ubuntu 12.04

Solution 1:

The simplest solution would to be to add the stated lines,

usershare owner only = false

to the Global section of the smb.conf file by,

sudo -H gedit /etc/samba/smb.conf

then save the file and restart the samba service,

sudo service smbd restart

Then try again to share the selected folder

Open the parent directory with administrator permission and try again

sudo apt-get install gksu

gksu nautilus /your_complete_path/

then share the folder...