In magento version 1.6.0, 1.6.1, 1.6.2, 1.7.0 when you add custom option for a new product, and choose Select (e.g: Drop-down or Radio Buttons or Checkbox or Multiple Select ) for “Input Type” it doesn’t work any more and if you check it by firebug you will see a error in console tab like this
OptionTemplateSelect is not defined
http://yourdomain.com/js/prototype/prototype.js
Line 727
I have got a quick solution for this problem and here it is,
goto this folder
app/design/adminhtml/default/default/template/catalog/product/edit/options/type/
and just rename this file select.phtml0000664 to select.phtml and that’s it.
Hope this will help some people 🙂