private method `min' called for #<Date: 4899253/2,0,2299161> error

Hi,

I am rewriting PL/SQL appliation to rails and when I clicked 'edit' link(after performing 'generate ...' command) I am having the following error.

19: <p><label for="attending_ip_dob">Dob</label><br/>
20: <%= datetime_select 'attending_ip', 'dob'  %></p>


c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:191:in `select_minute'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:390:in `send'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:390:in `date_or_time_select'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:385:in `each'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:385:in `date_or_time_select'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:356:in `to_datetime_select_tag_without_error_wrapping'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/active_record_helper.rb:209:in `to_datetime_select_tag'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_view/helpers/date_helper.rb:132:in `datetime_select'
#{RAILS_ROOT}/app/views/attending_ips/_form.rhtml:20:in `_run_rhtml_47app47views47attending_ips47_form46rhtml'
#{RAILS_ROOT}/app/views/attending_ips/edit.rhtml:4:in `_run_rhtml_47app47views47attending_ips47edit46rhtml'
#{RAILS_ROOT}/app/views/attending_ips/edit.rhtml:3:in `_run_rhtml_47app47views47attending_ips47edit46rhtml'
-e:4:in `load'
-e:4

It looks like to me that this is because of the input format (dd/dd/yyyy) that used to take for old app. For example, in the table:
DOB: 1994-10-01 00:00:00.0

However, other auto generated field such as 'LAST_MODIFIED_BY'(type is date) column is working fine.
LAST_MODIFIED_BY: 2007-10-15 18:43:05.0

how can I solve this problem? Is there something other than 'datetime_select'?

thanks in advance