Comment 1 for bug 474589

As a workaround, remove the [printers] section in your smb.conf file,

then open /usr/share/system-config-samba/sambaParser.py
and add before the class SambaSection line (mind the indentation!):

class Error(Exception):
    pass

it will likely crash if you try to give the same name to two different shares, just don't do that.