DateTime doesn't work?

on a windows xp pro box...

test controller: require "Date"

class DateController < ApplicationController   def index     d = DateTime.parse("2006-01-01")   end end

results in the error   ArgumentError in DateController#index   invalid date

in irb however it is fine: irb(main):001:0> require "Date" => true irb(main):002:0> DateTime.parse("2006-01-01") => #<DateTime: 4907473/2,0,2299161>

what's going on?

btw, this is using rails 1.1.6 and ruby 1.8.4 (2006-04-14) [i386-mswin32]