in cakephp, the form names are in these format
data[Model][field_name]

in the rating, the code generates the ffg classname for the radio buttons
star_group_data[Model][field_name]

Fix:
- line 97: var n = this.name;
+ line 97: var real_name = this.name;
+ line 98: var n = real_name.replace(/[^A-Za-z0-9_\-]/g, '-');

- line 109: $.rating.groups[n].valueElem = $('<input type="hidden" name="' + n + '" value=""' + (settings.readOnly ? ' disabled="disabled"' : '') + '>');
+ line 109: $.rating.groups[n].valueElem = $('<input type="hidden" name="' + real_name + '" value=""' + (settings.readOnly ? ' disabled="disabled"' : '') + '>');