On Hudson 1.275, it is impossible to create a new view on a clean installation.
It seems that the JavaScript code to update the OK button can only handle
situations where multiple radio buttons exist, but on a default installation
only one radio option (List View) is available.

Reproduction:

• On the overview page, click the '+' tab, the create a new view
• Enter a view name, and select 'List View'
• Make sure that 'List View' is the only option you can select
  Expected result:
• The OK button will be enabled, since all fields have been filled
  Actual result:
• The OK button remains disabled.

A quick look at the javascript code, shows that the updateOk.state() function,
cannot evaluate radio.length, since radio is not an array. This is probably
because form.elements['mode'] evaluates to a single element