scriptaculous slider not working with bundle-fu

Question

We just upgraded our rails version from 2.1.2 to 2.3.8 then suddenly our javascript sliders stopped working. I looked at previous commits, codes, etc and saw nothing changed that might affect the slider.js

I finally hit the nail on the head when I randomly commented out bundle-fu here:

<%# bundle :name => "javascript_bundle" do -%>  
  <%= javascript_include_tag "prototype", "effects", "dragdrop", "controls", "lowpro", "neo", "filter", "slider", "calendar", "application", 'alerts'  %>  
<%# end %>

Suddenly, all our sliders were working! Is bundle-fu not compatible with rails 2.3.8?